These articles explore the body, the mind, the environment, and the systems that shape human health. Each piece is written to make complex ideas easier to understand, whether the topic is training, nutrition, sleep, stress, digestion, symptoms, physiology, disease, or the way modern life affects how we feel and function.

Strength, Health, & the Art of Living Well

General Ryan Crossfield General Ryan Crossfield

The Power of Placebo

The placebo effect is usually discussed as if it is imaginary, fake, or secondary to “real” medicine. But that understanding may be too dismissive. The placebo effect does not mean nothing happened. It means the body responded to expectation, belief, context, and perceived meaning.

An interesting example comes from research conducted in the cardiac ward of a major American hospital with patients suffering from angina.

Angina is a condition where the arteries supplying the heart become restricted, producing acute chest pain. Digitalis, traditionally derived from the foxglove plant, has been used to help relieve the acute symptoms of an angina attack. Once administered, it generally brings fast relief.

In this experiment, patients who suffered from an acute angina attack were split into two groups. Fifty percent were given digitalis, while the other fifty percent were given a placebo. The second group received only sugar tablets, yet a significantly high proportion of them responded favorably and their symptoms subsided.

That finding alone is interesting because it shows that the body can respond powerfully to belief and expectation. The patients were not receiving the active drug, but many still experienced relief.

The more interesting part of the experiment was what happened with the doctors.

Half of the doctors who prescribed the placebo knew they were giving a placebo. The other half believed they were giving their patients the real drug. Surprisingly, the patients who received a placebo from doctors who thought they were prescribing the real medication responded much better than the patients who received a placebo from doctors who knew they were prescribing a sugar tablet.

That detail matters.

It suggests that the placebo effect is not only about the patient’s belief. The doctor’s confidence may also influence the patient’s response. In other words, healing is not shaped only by the substance being given. It may also be shaped by the interaction, the expectation, the tone, the certainty, and the meaning created around the treatment.

This does not mean medicine is fake. It does not mean drugs do nothing. Digitalis has real pharmacological effects. But it does suggest that the body is more responsive to context than many people realize.

The belief of the patient matters. The confidence of the doctor matters. The relationship between the two may matter as well.

That should make us think more carefully about healing. If the body can respond differently depending on belief, expectation, and the confidence of the person providing care, then the clinical encounter itself is not neutral. The way something is communicated can become part of the treatment.

A dismissive doctor may create one biological response. A confident doctor may create another. A patient who feels reassured may respond differently than a patient who feels uncertain or afraid.

This is the power of placebo.

It is not proof that symptoms are imagined. It is proof that the body and mind are not separate. What a person believes, expects, and feels can influence how the body responds. The brain, nervous system, immune system, hormones, pain perception, and cardiovascular system are all connected. The meaning attached to an intervention may change the way those systems behave.

The placebo effect should not be treated as an embarrassing flaw in medicine. It should be treated as evidence that healing involves more than chemistry alone.

The body responds to information. Sometimes that information comes in the form of a drug. Sometimes it comes through confidence, trust, expectation, and belief.

That does not make placebo less real.

It may make it one of the clearest examples of how powerful the body can be when it believes healing is possible.

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General Ryan Crossfield General Ryan Crossfield

K2 Deficiency Might Be Written All Over Your Face

The skin is often treated as a cosmetic issue, but it may reveal more about internal health than we realize. Wrinkles, skin firmness, and tissue quality may not only reflect age or sun exposure. In some cases, they may also reflect what is happening in the bones, kidneys, and vitamin K2-dependent systems of the body.

One example comes from research on postmenopausal women. Specifically, the severity of a postmenopausal woman’s facial wrinkles appears to predict her risk of osteoporosis. Women with more extensive facial wrinkles were found to be much more likely than their peers to have low bone mass, while women with firmer skin tended to have denser bones. This relationship appeared regardless of age or body weight.¹

That matters because osteoporosis is usually thought of as a bone issue, while wrinkles are usually thought of as a skin issue. But the body does not separate itself into isolated cosmetic and structural categories. Skin quality and bone quality may be connected through deeper biological processes, including collagen, mineral metabolism, and vitamin K-dependent proteins.

A similar connection appears in research on kidney function. Korean research published in Nephrology in 2008 found that increased facial wrinkling was associated with reduced kidney filtration rate, which is a measure of kidney function. This association was found independent of age and sex.²

That finding becomes even more interesting when paired with American research published the following year. In 2009, researchers found that decreased kidney filtration predicted an increase in inactive matrix Gla protein, often abbreviated as MGP.³

MGP is a vitamin K-dependent protein. When vitamin K2 status is insufficient, MGP remains inactive. That matters because active MGP helps regulate calcium placement in the body. In simple terms, vitamin K2 helps activate proteins that guide calcium into the right places and away from places where it does not belong.

This is where the skin connection becomes more meaningful. If increased facial wrinkling is associated with reduced kidney filtration, and reduced kidney filtration is associated with higher levels of inactive MGP, then facial wrinkles may point toward something deeper than skin aging alone.

They may reflect a broader issue involving vitamin K2-dependent biology.

This does not mean every wrinkle is a sign of vitamin K2 deficiency. Aging, sun exposure, smoking, stress, hydration, genetics, nutrition, and hormone changes all influence the skin. But the research does suggest that facial wrinkling may be connected to internal health markers in ways we often overlook.

When it comes to skin, a K2 deficiency might be written all over your face.

The larger point is that the body gives clues. Skin is visible, which makes it easy to dismiss as superficial. But visible signs can sometimes reflect invisible processes. The skin, bones, kidneys, blood vessels, and mineral-regulating proteins are all part of the same biological system.

Vitamin K2 sits at an important intersection in that system. It helps activate proteins involved in bone mineralization and calcium regulation, including osteocalcin and MGP. When these proteins remain inactive, the body may struggle to manage calcium properly.

That is why wrinkles, bone density, kidney function, and inactive MGP may belong in the same conversation. They may seem unrelated at first, but they all point toward the same idea: external signs can reflect internal function.

A face does not tell the whole story, but it may give hints. Skin quality may be one of the visible ways the body reveals changes happening beneath the surface.


References

  1. Pal, L., Kidwai, N., Glockenberg, K., et al. “Skin Wrinkling and Rigidity Are Predictive of Bone Mineral Density in Early Postmenopausal Women.” Endocrine Reviews 32, no. 03 Meeting Abstracts, 2011, 3–126.

  2. Park, B. H., Lee, S., Park, J. W., et al. “Facial Wrinkles as a Predictor of Decreased Renal Function.” Nephrology 13, no. 6, 2008, 522–527.

  3. Parker, B. D., et al. “Association of Kidney Function and Uncarboxylated Matrix Gla Protein: Data from the Heart and Soul Study.” Nephrology Dialysis Transplantation 24, no. 7, 2009, 2095–2101. https://doi.org/10.1093/ndt/gfp024

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General Ryan Crossfield General Ryan Crossfield

Our Bones Impact Insulin Sensitivity

Most people think of the skeleton as structure. Bones hold us upright, protect organs, give muscles leverage, and allow us to move through the world. In that sense, the skeleton is usually imagined as a kind of living scaffolding.

But research has shown that the skeleton may be far more active than that.

In 2007, groundbreaking research published in Cell revealed that the skeleton, through the vitamin K2-dependent protein osteocalcin, has a significant impact on the body’s production of insulin and sensitivity to insulin. This finding changed the way scientists understood bone. Instead of seeing the skeleton as inert support tissue, the research suggested that bone also functions as a dynamic endocrine organ.

That is a major shift.

An endocrine organ produces signaling molecules that influence other systems in the body. We usually think of endocrine function in relation to glands such as the thyroid, pancreas, adrenals, or reproductive organs. But this research suggested that bone also communicates with metabolism.

The key player is osteocalcin, a protein produced within bone. Osteocalcin is vitamin K2-dependent, meaning vitamin K2 plays an important role in its function. According to the researchers, osteocalcin has the capacity to improve glucose tolerance and influence insulin production and insulin sensitivity.

That matters because insulin resistance is one of the defining features of type 2 diabetes. When the body becomes resistant to insulin, glucose regulation becomes impaired. Blood sugar stays elevated more easily, the pancreas has to work harder, and metabolic dysfunction begins to develop over time.

If bone-derived osteocalcin helps regulate insulin production and sensitivity, then bone health is not only about fractures, posture, or density. It is also connected to metabolic health.

This makes vitamin K2 important in a way many people do not fully appreciate. Vitamin K2 is often discussed in relation to calcium metabolism and bone health, but its relationship with osteocalcin connects it to a much larger conversation. If osteocalcin influences glucose tolerance and insulin sensitivity, then supporting vitamin K2 status may be relevant to the prevention of insulin-resistant diabetes.

The larger point is that the body is not a collection of disconnected parts. Bone affects metabolism. Nutrients affect hormones. Hormones affect blood sugar. The skeleton communicates with the pancreas, energy regulation, and glucose handling.

This is why reductionist thinking often fails in health. When we think of bones only as structure, we miss their role in signaling. When we think of insulin resistance only as a blood sugar problem, we may miss the other tissues and nutrients involved in metabolic regulation.

The 2007 discovery made a strong case that the skeleton should be understood as part of the endocrine system. Bone is not just something the body carries around. It is metabolically active tissue that participates in whole-body regulation.

Our bones do more than hold us up. They help communicate with the systems that determine how well we produce insulin, respond to insulin, and manage glucose.

That means bone health and metabolic health are more connected than most people realize.


Reference

Lee, N. K., Sowa, H., Hinoi, E., et al. “Endocrine Regulation of Energy Metabolism by the Skeleton.” Cell 130, no. 3, 2007, 456–469. https://doi.org/10.1016/j.cell.2007.05.047

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Nutrition/Supplementation, General Ryan Crossfield Nutrition/Supplementation, General Ryan Crossfield

Snacking Is Stupid

Prior to 1977, Americans did not just eat more dietary fat and fewer refined grains. They also ate less often.

That part of the nutrition conversation does not get nearly enough attention. Most people focus on what changed in the diet, but eating frequency changed too. There were no official recommendations telling people to abandon structured meals and start eating all day, but eating patterns changed anyway.

That shift may have contributed to the obesity crisis.

The National Health and Nutrition Examination Survey, or NHANES, found that in 1977 most people ate three times per day: breakfast, lunch, and dinner. Eating was organized around meals, not constant grazing. If a child wanted an after-school snack, the typical answer from mom was, “No, you’ll ruin your dinner.” If they wanted a bedtime snack, the answer was usually no again.

Snacking was considered neither necessary nor especially healthy. A snack was a treat. It happened occasionally, not automatically.

Now, the message has changed. We are often told that eating more frequently helps with weight loss. The idea is that more frequent meals or snacks somehow “stoke the metabolism,” control hunger, or make fat loss easier. The problem is that this assumption has been repeated far more than it has been proven.

The scientific support for eating more frequently as a weight-loss strategy is weak. Its respectability seems to come mostly from repetition. At first glance, the idea sounds pretty stupid. And it sounds stupid because, in most cases, it is.

Snacking creates more opportunities to eat. More opportunities to eat can easily become more opportunities to overeat. This is especially true in a modern food environment where snacks are rarely just small portions of whole foods. They are usually highly palatable, easy to consume, calorie-dense, and designed to be eaten quickly.

The issue is not that a snack can never have a place. The issue is that snacking has been normalized as if the human body requires constant feeding to function well. Historically, that was not how most people ate. Most people ate meals, then stopped eating until the next meal.

That structure matters.

When eating is built around breakfast, lunch, and dinner, hunger and satiety have a clearer rhythm. You eat, you digest, you become hungry again, and you eat the next meal. When eating becomes constant, that rhythm gets blurred. Food becomes less tied to hunger and more tied to habit, boredom, stress, convenience, availability, or marketing.

That is exactly the question raised by Barry Popkin and Kiyah Duffey in their paper, “Does Hunger and Satiety Drive Eating Anymore?” The title alone points to the problem. Modern eating patterns have shifted toward more eating occasions and less time between those eating occasions.¹

This matters because hunger and satiety should mean something. They are part of the body’s regulatory system. But when food is always available, and when snacks are treated as a normal part of the day, eating can become disconnected from actual physical need.

A person may not be hungry. They may just be used to eating at that time.

They may not need food. They may just be tired, stressed, bored, distracted, or surrounded by snacks.

They may not be supporting their metabolism. They may simply be adding calories they never needed in the first place.

That is why snacking deserves more scrutiny. It is often presented as a helpful habit, but for many people, it may be one of the quiet reasons they struggle to lose weight. A handful of food here, a protein bar there, a few bites after dinner, something sweet before bed, and suddenly the calorie deficit they thought they were creating is gone.

The body does not need to be fed constantly. Most people do not need six meals a day. Most people do not need a snack between every meal. And most people trying to lose weight would probably benefit from fewer eating occasions, not more.

This is especially true when the goal is fat loss.

A simple meal structure creates boundaries. Breakfast, lunch, and dinner give the day a clear rhythm. It becomes easier to know when eating starts and when eating stops. It becomes easier to build meals around protein, whole foods, and adequate nutrition instead of trying to manage constant hunger with random snacks.

Again, this does not mean a snack is always wrong. A hard-training athlete, someone with higher calorie needs, a person with blood sugar issues, or someone who genuinely needs more food within their day may have a reason to include one. But that is different from treating snacking as a universal recommendation.

The problem is not the occasional snack. The problem is the belief that constant eating is necessary, healthy, or automatically helpful for weight loss.

For most people, snacking is not a strategy. It is a leak in the system.

If the goal is better health, better appetite control, and better body composition, the first step may be returning to a simpler structure: eat real meals, make them satisfying, prioritize protein and whole foods, and stop treating every passing urge to eat as a biological emergency.

Snacking became normal. That does not mean it became useful.


Reference

Popkin, B. M., & Duffey, K. J. “Does Hunger and Satiety Drive Eating Anymore? Increasing Eating Occasions and Decreasing Time Between Eating Occasions in the United States.” American Journal of Clinical Nutrition 91, no. 5, 2010, 1342–1347. https://doi.org/10.3945/ajcn.2009.28962

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Health Philosophy, Gut Health Ryan Crossfield Health Philosophy, Gut Health Ryan Crossfield

Questioning Immunology

Most people are introduced to the immune system through a very simple metaphor: the body is a battlefield, germs are the enemies, and the immune system is an army of soldiers fighting off invaders.

That image is easy to understand, which is probably why it has become so common. The problem is that it may also be too simple to explain what is actually happening inside the body.

The immune system is not just a defensive military force. It is an intelligent, adaptive, highly responsive communication system. It reacts to the internal and external environment. It responds to stressors. It coordinates inflammation, repair, tolerance, elimination, and adaptation. It is deeply connected to the gut, the microbiome, the nervous system, the endocrine system, and the condition of the body as a whole.

When immunology is reduced to “soldiers fighting germs,” we risk missing the complexity of the system we are trying to understand.

A major part of modern immunology is also tied to vaccinology, which shapes how many people understand immunity. Vaccines are often discussed through the production of antibodies, and antibodies are frequently treated as synonymous with protection. In the laboratory setting, antibody production is often used as a surrogate marker to suggest that a vaccine “works.”

That raises an important question: does the presence of antibodies always equal true protection?

It is worth asking whether antibodies produced after vaccination consistently bind to and inactivate disease-causing agents in the way the public is often led to believe. It is also worth asking whether antibodies may, in some cases, be part of the body’s broader response to the ingredients or stressors introduced through vaccination, including compounds such as polysorbate 80 or formaldehyde.

These questions are not small. They challenge the way many people have been taught to think about immunity, protection, and disease.

The same kind of questioning can be applied to contagion.

The conventional view says germs travel from one person to another, infect them, and produce disease. That model is treated as obvious, but germs as pathogens is a more complex question than the simple battlefield metaphor allows. Over the past few decades, science has produced an enormous amount of literature on microbes, pathogens, host response, the microbiome, and immune regulation.

The discovery of the microbiome should have changed the way we talk about microbes. Our inner ecology reveals that we do not simply live in opposition to microorganisms. We depend on them. The very microbes that have often been demonized are also involved in digestion, immune regulation, metabolism, barrier function, and overall health.

This does not make every microbe harmless. It does mean the relationship between microbes and the body is more complex than enemy versus defender.

The conversation becomes even more interesting when we consider the virome. Research into human biology suggests that a meaningful percentage of what we call human DNA may be viral in origin. Some estimates place this around 8 percent. This raises deeper questions about how we define viruses, how genetic information moves between living systems, and whether some of the agents we have assigned purely causal roles may also be part of a more complicated biological exchange.

A virus is generally described as nucleic acids in a protein coat that require cells to replicate. In that sense, viruses are often called nonliving agents of genetic information transfer. As we learn more about how genetic information is passed between living entities, we may need to think more carefully about the roles we assign to these vectors.

This also invites a larger question: has every assumption in conventional infectious disease theory been proven as completely as people assume, or are some claims still inferred through models, indirect evidence, and interpretation?

Transmission of effects can take many forms when we step outside the narrowest version of conventional medicine. A yawn can spread through a room without being a pathogen. Fear can spread through a group and create physical symptoms. There are studies in which people became sick after believing they had been exposed to contaminated air, especially after seeing others appear sick from it, even when there was nothing wrong with the air.¹

There are also examples of people developing cold-like symptoms when they already believe themselves to be unwell or vulnerable. These situations raise questions about the relationship between belief, perception, nervous system state, environment, and physical symptoms.

That does not mean pathogens are irrelevant. It means physical pathogens alone may not explain the full picture of illness, susceptibility, symptom expression, and recovery.

Symptoms themselves may also deserve a different interpretation.

Vomiting, diarrhea, sweating, coughing, sneezing, and runny noses all have something in common. They are exudative. They move material out of the body. From this perspective, the symptoms of infection may be evidence that the body knows how to eliminate what it no longer wants to hold.

This way of thinking changes the meaning of symptoms. A symptom is no longer just an inconvenience to suppress. It becomes a message, a process, and possibly a form of elimination.

This may also help explain why some people seem to move through repeated patterns of illness during or after major changes in their health, lifestyle, medication use, or internal toxic burden. One possibility is that the immune system is finally able to mobilize and eliminate stored stressors or toxicants. In that context, symptoms may reflect the body’s attempt to restore order rather than simply evidence of an outside enemy taking control.

This is where curiosity matters.

What other assumptions have we made that remain unproven, incomplete, or open to reinterpretation? What have we accepted because it is familiar rather than because it fully explains what we see? Science can be a beautiful tool for discovery, but only when it is allowed to acknowledge that a more complete picture may be emerging.

Charles Eisenstein wrote in The Ascent of Humanity:

“When we see germs as predators who seek to steal ‘resources’ from us for their own biological interest (survival and reproduction), then a rational response is to deny them those resources, to hide from the predators or fight them off — the fight-or-flight response… If I believe, on the contrary, that there is some reason specific to my own body why the flu has infected me and not you, then the program of control doesn’t make sense anymore.”

That quote points to a very different relationship with the body.

When illness is viewed only as invasion, the response becomes control. Fight harder. Suppress faster. Kill the invader. But when illness is viewed as an interaction between the body, the environment, the immune system, the microbiome, perception, stress, terrain, and resilience, a different set of questions becomes possible.

Why did this person become sick at this time?

Why did another person exposed to the same environment remain well?

What was happening in the body before symptoms appeared?

What does the body need in order to move through this process?

How can the immune system be supported rather than overridden?

This is the deeper question behind symptomology, immunology, and the way we understand disease. The body is not passive. It is not stupid. It is not simply waiting to be attacked by the outside world. It is constantly responding, adapting, communicating, regulating, eliminating, and trying to restore balance.

Sometimes all it takes is a reminder that the body is not the enemy.

When we are aligned with the body, and when we truly make a truce with it, we may access a much greater capacity for healing than we have been taught to believe. That is the reclamation worth paying attention to.

Once we understand that symptoms and illness can have meaning, that they may be sending us a message, and that the body has a capacity to move through them when properly supported, our relationship with health begins to change.

We become less interested in fear and control.

We become more interested in listening, supporting, questioning, and understanding.

That shift alone is revolutionary in a society that has taught people to distrust their bodies, silence their symptoms, and hand over their intuition to systems that may not always see the whole picture.

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General Ryan Crossfield General Ryan Crossfield

Just Take a Tylenol

“Just take a Tylenol.”

This might as well be the American mantra. It reflects the perspective many of us have been taught to adopt: that the body is full of annoying symptoms, and the easiest response is to suppress them with drugs.

The main ingredient in Tylenol is acetaminophen, which has been used in the United States for more than 70 years. It is considered a benign over-the-counter medication, used reflexively for aches, pains, and fever, and is widely thought of as safe during pregnancy. About 23 percent of American adults, or roughly 52 million people, use a medicine containing acetaminophen each week. It is the most common drug ingredient in the United States and is found in more than 600 medicines. However, this “harmless” drug has been linked to more than 110,000 injuries and deaths per year.¹

So how can Tylenol, something handed out so casually, be harmful?

One surprising part of the conversation is that researchers still do not fully know exactly how acetaminophen works.² What is known is that the drug reaches the brain, and that matters because acetaminophen can deplete glutathione, an antioxidant that is especially important for brain health.³

Glutathione helps the body balance oxidative damage and inflammation. When a medication affects that system, it should at least make us think more carefully about how casually we use it.

This does not mean acetaminophen has no place. It means the phrase “just take a Tylenol” may be far too casual for a drug that affects important biological systems and is used so frequently.

The same broader concern applies to other common pain relievers, including NSAIDs. NSAIDs are often used for pain and inflammation, but they can injure the small intestine. In one study, 71 percent of chronic NSAID users showed visible small-intestinal damage, compared to 10 percent of nonusers.⁴

Damaged intestines can contribute to intestinal permeability, often called “leaky gut” or gut permeability. This matters because gut permeability has been linked with conditions such as depression, ADHD, and allergies. NSAIDs can induce gut permeability and may also harm the microbiome, the inner ecology of organisms that supports overall wellness.⁵

This is the larger problem with our reflexive approach to pain. We are often taught to see symptoms as inconveniences to silence rather than signals to understand. A headache, ache, pain, or fever may be uncomfortable, but discomfort is not automatically meaningless. It is often information.

When the first response is always suppression, we may miss the opportunity to ask why the symptom appeared in the first place.

That does not mean every headache needs deep investigation. It does not mean pain relievers should never be used. It means we should be more thoughtful about reaching for them automatically, especially when they are used often, casually, or without considering the broader effects they may have on the body.

Once we understand the potential concerns with Tylenol and other NSAIDs, the next question becomes obvious: what can someone use for headaches and other aches and pains?

One natural option worth discussing is turmeric, the yellow root found in curry powder. Turmeric contains curcumin, a compound with anti-inflammatory and pain-relieving properties. It has been used in Ayurvedic and Chinese medicine for centuries as a treatment for pain, digestive disorders, and wound healing.

Several studies have shown beneficial effects of curcumin. Research has found that curcumin may work as well as ibuprofen for pain related to knee osteoarthritis.⁶ Another study comparing ginger, mefenamic acid, and ibuprofen found benefit for pain in women with primary dysmenorrhea.⁷

So the next time you have a headache, it may be worth considering 1 to 2 grams of curcumin, or even a turmeric latte, depending on the situation.

The point is not that natural options are always better or that medications are always bad. The point is that “just take a Tylenol” should not be the only way we think about pain.

Pain is not always the enemy. Sometimes it is a message. The goal should not always be to silence the body as quickly as possible. The goal should be to understand what the body is saying, respond appropriately, and use any intervention, natural or pharmaceutical, with more awareness.


References

  1. T. Christian Miller and Jeff Gerth, “Behind the Numbers: We Explore the Data Behind Figures Showing How Many People Die from Overdosing on Acetaminophen, the Active Ingredient in Tylenol,” ProPublica, September 20, 2013. www.propublica.org/article/tylenol-mcneil-fda-behind-the-numbers

  2. Carmen Drahl, “How Does Acetaminophen Work? Researchers Still Aren’t Sure,” Chemical and Engineering News 92, no. 29, July 21, 2014, 31–32. https://cen.acs.org/articles/92/i29/Does-Acetaminophen-Work-Researchers-Still.html

  3. John T. Slattery et al., “Dose-Dependent Pharmacokinetics of Acetaminophen: Evidence of Glutathione Depletion in Humans,” Clinical Pharmacology and Therapeutics 41, no. 4, April 1987, 413–418. https://doi.org/10.1038/clpt.1987.50

  4. D. Y. Graham et al., “Visible Small-Intestinal Mucosal Injury in Chronic NSAID Users,” Clinical Gastroenterology and Hepatology 3, no. 1, January 2005, 55–59. PMID: 15645405.

  5. G. Sigthorsson et al., “Intestinal Permeability and Inflammation in Patients on NSAIDs,” Gut 43, no. 4, October 1998, 506–511. PMID: 9824578.

  6. V. Kuptniratsaikul et al., “Efficacy and Safety of Curcuma domestica Extracts in Patients with Knee Osteoarthritis,” Journal of Alternative and Complementary Medicine 15, no. 8, August 2009, 891–897. https://doi.org/10.1089/acm.2008.0186

  7. G. Ozgoli et al., “Comparison of Effects of Ginger, Mefenamic Acid, and Ibuprofen on Pain in Women with Primary Dysmenorrhea,” Journal of Alternative and Complementary Medicine 15, no. 2, February 2009, 129–132. https://doi.org/10.1089/acm.2008.0311

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Nutrition/Supplementation Ryan Crossfield Nutrition/Supplementation Ryan Crossfield

Vegetarian Omega-3s: Healthy Fat or Not?

Omega-3s are usually discussed as healthy fats, and for good reason. They play important roles in brain health, cardiovascular function, inflammation, and overall cellular health. The part that often gets missed is that not all omega-3s are the same.

The three omega-3s most commonly discussed are ALA, EPA, and DHA. ALA, or alpha-linolenic acid, is found in plant foods such as flaxseeds, chia seeds, walnuts, and some plant oils. EPA and DHA are found primarily in seafood and marine algae. These are the longer-chain omega-3s most directly associated with many of the benefits people think of when they hear “omega-3.”

Many vegetarians try to meet their omega-3 needs by supplementing with ALA because ALA is technically a precursor to both EPA and DHA. That means the body can use ALA to make EPA and DHA. The problem is that the body is not very efficient at this conversion.

In general, ALA can be converted into EPA and then DHA, but the conversion is limited. The National Institutes of Health notes that this conversion occurs primarily in the liver and is generally reported to be less than 15 percent. Other research and nutrition reviews have shown that the conversion can be much lower, especially for DHA.

This is where the issue becomes important for vegetarians and vegans. ALA is a healthy fat, but relying on ALA alone may not reliably provide enough EPA and DHA. Some estimates suggest that less than 5 percent of ALA is converted into EPA, and even less is converted into DHA. The exact number can vary depending on sex, genetics, overall diet, omega-6 intake, and nutrient status, but the main point remains the same: conversion is limited.

DHA is especially difficult to produce from ALA. The Linus Pauling Institute notes that studies in healthy young men found approximately 8 percent of dietary ALA converted to EPA and 0 to 4 percent converted to DHA, while healthy young women showed higher conversion rates, likely influenced by estrogen.

This means plant-based omega-3 intake is not useless. ALA still matters. It is an essential fatty acid, which means the body cannot make it and it must come from the diet. The issue is that ALA is not the same thing as directly consuming EPA and DHA.

There is also another layer to consider. The conversion of ALA into EPA and DHA depends on enzymes involved in fatty acid metabolism, including desaturase and elongase enzymes. Linoleic acid, an omega-6 fat that is common in many plant foods and seed oils, competes with ALA for some of those same enzymes. A higher omega-6 intake can reduce conversion of ALA into longer-chain omega-3s.

Nutrient status may also matter. The conversion process relies on several nutrients that support fatty acid metabolism, and iron status is worth paying attention to because many vegetarians and vegans are already at greater risk of low iron intake or lower iron stores. If someone is relying on ALA conversion as their main source of EPA and DHA while also struggling with nutrient deficiencies, the system may become less reliable.

The practical takeaway is simple: vegetarian omega-3 sources can be healthy, but they may not be enough on their own if the goal is to maintain optimal EPA and DHA status.

For someone eating a vegetarian or vegan diet, flaxseeds, chia seeds, walnuts, and other ALA-rich foods can still be useful. They provide essential fats and belong in a healthy diet if they are tolerated well. However, they should not automatically be treated as a complete replacement for EPA and DHA.

A more reliable strategy for vegetarians and vegans is to consider algae-based EPA and DHA. Marine algae is where fish ultimately get these omega-3s in the food chain, which makes algae oil a direct plant-compatible source of EPA and DHA without relying entirely on conversion from ALA.

So, are vegetarian omega-3s healthy fats?

Yes, but with an important distinction. ALA is healthy, essential, and worth including, but it does not convert efficiently enough to assume it fully covers EPA and DHA needs for everyone. If someone avoids seafood, they should understand the difference between consuming plant-based ALA and directly consuming EPA and DHA from marine algae.

The issue is not whether vegetarian omega-3s are healthy. The issue is whether they are complete enough to meet the body’s long-chain omega-3 needs.

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General, Nutrition/Supplementation Ryan Crossfield General, Nutrition/Supplementation Ryan Crossfield

Sugar Is Bad for Your Brain

Sugar is usually discussed in the context of weight gain, blood sugar, or diabetes, but its effects go much deeper than that. Sugar also has consequences for the brain, partly because the brain depends heavily on energy metabolism, mitochondrial function, neurotransmitter signaling, and inflammation control.

Scientists have known there is a relationship between sugar and cellular energy production for a long time. In 1927, biochemist Herbert Crabtree discovered that elevated glucose levels could lower mitochondrial function. This matters because mitochondria are responsible for producing the energy our cells rely on to function properly.

When mitochondrial function is impaired, the issue is not only about energy. Mitochondria are involved in cellular health, oxidative stress, inflammation, and the way tissues throughout the body respond to metabolic stress. Since the brain is one of the most energy-demanding organs in the body, anything that negatively affects mitochondrial function has the potential to affect brain health.

Sugar has also been shown to decrease the number of dopamine receptors in the brain. Dopamine is closely tied to motivation, reward, pleasure, drive, and reinforcement. When dopamine signaling is altered, it can affect how the brain responds to food, reward, and repeated exposure to highly palatable foods.

This is one reason sugar can be so difficult for people to moderate. The issue is not only that sugar tastes good. It also interacts with the brain’s reward system in a way that can influence cravings, habits, and the desire to keep consuming more.

While all forms of sugar can become a problem when consumed excessively, fructose appears to be especially concerning. Fructose is found in fruit, high-fructose corn syrup, and agave nectar. The context matters, though. Eating moderate amounts of whole, seasonal fruit is very different from consuming large amounts of fructose through fruit juice, sweetened beverages, processed foods, high-fructose corn syrup, or agave nectar.

Fructose can contribute to oxidative stress and may also feed less beneficial bacteria in the gut, which can promote inflammation. That matters because the gut and brain are not separate systems. Inflammation that begins in the gut can influence the rest of the body, including the brain.

Fructose has also been implicated in damaging mitochondria in skeletal muscle cells, harming the mitochondrial membrane, and impairing cellular respiration and energy metabolism. In simple terms, excessive fructose may interfere with the body’s ability to produce energy efficiently at the cellular level.

The brain will usually tolerate moderate amounts of whole fruit, especially when that fruit is seasonal and eaten in its natural form. Whole fruit comes packaged with water, fiber, micronutrients, and other compounds that slow down absorption and make overconsumption less likely.

Fruit juice is different. High-fructose corn syrup is different. Agave nectar is different. These sources make it much easier to consume large amounts of fructose without the same natural limits that come with eating whole fruit.

For that reason, a practical approach is to avoid excessive fructose intake, completely stay away from fruit juice, and avoid foods that contain high-fructose corn syrup or agave nectar.

A reasonable target is to limit fructose intake to about 20 grams per day.

This does not mean fruit is the enemy. It means the form, dose, and context matter. Whole fruit in moderate amounts is not the same thing as drinking fruit juice or consuming processed foods sweetened with concentrated fructose sources.

Sugar affects more than body weight. It can influence mitochondrial function, dopamine signaling, oxidative stress, gut health, inflammation, and energy metabolism. Since all of those systems matter for the brain, sugar is not something we should think about only through the lens of calories.

If the goal is better brain health, better energy, and better metabolic function, reducing excess sugar, especially concentrated fructose, is one of the simplest places to start.

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The 17-Year Gap

When you hear something that sounds wild, crazy, or otherwise unbelievable, it is easy to dismiss it immediately. We tend to assume that if something were true, especially in medicine, it would already be widely known, accepted, and applied.

But that assumption may not be as safe as we think.

There is often a significant delay between what research shows and what becomes part of a doctor’s daily routine. One frequently cited estimate is that it takes an average of seventeen years for research evidence to move into clinical practice. In other words, there can be a long gap between what is discovered, what is understood, what is accepted, and what is actually used in standard care.

That matters because medicine’s standard of care may be evidence-based in theory while still lagging behind the evidence in practice. The existence of research does not mean it has been adopted. The existence of data does not mean it has changed protocols. The existence of a signal of inefficacy or harm does not mean it has reached the level of everyday clinical decision-making.

This is not necessarily because doctors are careless or malicious. It is because systems move slowly. Research has to be published, reviewed, debated, replicated, interpreted, taught, translated into guidelines, accepted by institutions, and then worked into the habits and routines of clinicians. Each of those steps takes time, and every step creates another opportunity for delay.

That delay becomes important when we hear information that challenges what we thought was true.

A new idea can sound unbelievable simply because it has not yet reached the mainstream. A treatment, health practice, nutritional approach, or lifestyle intervention may seem strange because it does not fit the current standard of care. But the current standard of care is not always the same thing as the full body of available evidence. Sometimes it is only the part of the evidence that has successfully made its way through the system.

This does not mean every alternative claim is true. It does not mean we should believe every contrarian idea just because institutions are slow. It means we should be careful about confusing unfamiliarity with falsehood.

The right response to something that sounds unbelievable is not automatic acceptance. It is also not automatic dismissal. The better response is curiosity, skepticism, and a willingness to look at the evidence.

The 17-year gap gives us a reason to stay intellectually humble. It reminds us that medical knowledge does not move from research paper to patient care overnight. It reminds us that what is considered normal today may eventually be revised, abandoned, or replaced. It also reminds us that good ideas can take a long time to become common practice.

When something challenges the current model, the question should not be, “Why haven’t I heard this before?” The better question is, “What does the evidence actually say, and where is this idea in the process of being understood?”

That distinction matters.

If we assume the standard of care is always fully up to date, we may dismiss important information too quickly. If we assume every fringe claim is ahead of its time, we may believe things too easily. The goal is to avoid both extremes.

Medicine needs evidence. Patients need discernment. Health requires the ability to question without becoming careless, and to trust without becoming passive.

The 17-year gap does not prove that every unusual idea is right. It simply shows that the path from evidence to practice is slower than most people realize. That alone should make us more cautious about dismissing something just because it sounds unfamiliar.


Reference

Morris, Z. S., Wooding, S., & Grant, J. “The Answer Is 17 Years, What Is the Question: Understanding Time Lags in Translational Research.” Journal of the Royal Society of Medicine 104, no. 12, December 2011, 510–520. https://doi.org/10.1258/jrsm.2011.110180

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Alternative Energy Creation

For most of the history of biology, plants and animals have been thought of in two separate categories: autotrophs and heterotrophs.

Autotrophs are organisms that provide their own food sources. Plants do this by capturing sunlight and using a process called photosynthesis, where carbon dioxide and water are converted into carbohydrates and oxygen.

Carbon dioxide + Water → Carbohydrates + Oxygen

Heterotrophs are organisms that consume other organisms for food. Whether animals are herbivores, omnivores, or carnivores, they are eating other organisms to acquire energy.

For most of biology, this has been the general framework. Plants make their own energy from sunlight. Animals consume plants, animals, or both to get the energy they need. However, there are exceptions that have been called photoheterotrophs or mixotrophs.

Most corals, for example, can both synthesize energy from sunlight and consume organisms like plankton. The Venus flytrap, along with other insect-eating plants, can derive energy from sunlight and from the organisms they consume. Other examples include certain types of non-sulfur bacteria, heliobacteria, many types of plankton, and even some insects.

Humans, however, have generally been understood as purely heterotrophic. We need to eat plants and animals of various kinds to get our energy.

That may still be true in the most basic sense, but research into light, mitochondria, and cellular energy production adds an interesting layer to the conversation.

Hundreds of studies have found that human cells, specifically the mitochondria inside our cells, can produce more ATP when exposed to red and near-infrared light. ATP, or adenosine triphosphate, is the primary energy currency of the cell.

The research goes even further than that. A study published in the Journal of Cell Science found that other organisms, including mammals that are biologically similar to humans, such as rodents and pigs, were shown to be capable of taking up chlorophyll metabolites into their mitochondria. Those metabolites were then able to help capture sunlight energy and amplify cellular energy production. The study was titled “Light-harvesting chlorophyll pigments enable mammalian mitochondria to capture photonic energy and produce ATP.”

The research suggests that some animals can use these chlorophyll metabolites to speed up the rate of energy production and increase the overall volume of ATP produced by fairly large amounts in many cases.

Here is a key passage from the abstract of that study:

“Sunlight is the most abundant energy source on this planet. However, the ability to convert sunlight into biological energy in the form of adenosine-5′-triphosphate (ATP) is thought to be limited to chlorophyll-containing chloroplasts in photosynthetic organisms. Here we show that mammalian mitochondria can also capture light and synthesize ATP when mixed with a light-capturing metabolite of chlorophyll.”

This does not mean humans are plants, and it does not mean food is unnecessary. Humans still acquire energy primarily by consuming food. However, the research does suggest that our relationship with light may be more biologically meaningful than the traditional autotroph-versus-heterotroph model makes it seem.

Another related paper, “Light Effect on Water Viscosity: Implication for ATP Biosynthesis,” explored how near-infrared light may influence ATP synthesis through effects on intramitochondrial water viscosity. The authors proposed a physicochemical mechanism that could help explain why non-destructive levels of near-infrared light have been associated with increases in ATP synthesis.

Taken together, these findings point toward a broader idea: light may play a more direct role in cellular energy production than previously assumed.

For most of biology, we have drawn a clear line between organisms that make energy from sunlight and organisms that must consume other organisms for energy. That distinction is still useful, but it may not tell the whole story. Some organisms clearly blur that line, and research into mammalian mitochondria suggests there may be more overlap than once believed.

At minimum, this research gives us a reason to think more carefully about sunlight, red light, near-infrared light, chlorophyll metabolites, mitochondria, and ATP production. Energy creation in biology may not be as simple as plants make energy from light and animals get energy only from food.

The body may be more responsive to light than the older model allowed us to see.



References

Xu, C., Zhang, J., Mihai, D. M., & Washington, I. “Light-harvesting chlorophyll pigments enable mammalian mitochondria to capture photonic energy and produce ATP.” Journal of Cell Science 127, no. 2, 388–399, 2014. https://doi.org/10.1242/jcs.134262

Sommer, A. P., Haddad, M. K., & Fecht, H. J. “Light Effect on Water Viscosity: Implication for ATP Biosynthesis.” Scientific Reports 5, 12029, 2015. https://doi.org/10.1038/srep12029

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Revolutionary Thoughts and the Adolescent Brain

Some of the most revolutionary thoughts and practices in history have been brought forward by the youth of the world. This is not random. It is connected to a key fact about human development: the frontal cortex is the final brain region to fully mature.

In terms of synapse number, myelination, and metabolism, the frontal cortex does not fully come online until the midtwenties. That matters because the frontal cortex plays a major role in judgment, impulse control, planning, emotional regulation, and long-term decision-making.

This has two important implications.

First, no part of the adult brain is more shaped by adolescence than the frontal cortex.

Second, nothing about adolescence can be fully understood outside the context of delayed frontocortical maturation.

By adolescence, the limbic, autonomic, and endocrine systems are already highly active. These systems are deeply involved in emotion, arousal, stress, reward, motivation, and hormonal change. At the same time, the frontal cortex is still developing. It is still organizing itself. It is still learning how to regulate the intensity coming from the rest of the system.

This helps explain why adolescents can be so difficult to understand. They can be frustrating, inspiring, impulsive, reckless, destructive, self-destructive, selfless, selfish, impossible, and world changing, sometimes all within the same stage of life.

Adolescence and early adulthood are the times when a person is most likely to take extreme risks, seek novelty, and orient strongly toward peers. It is a time when someone is more likely to kill, be killed, leave home forever, invent an art form, help overthrow a dictator, ethnically cleanse a village, devote themselves to the needy, become addicted, marry outside their group, transform physics, make questionable fashion choices, break their neck recreationally, commit their life to God, mug an old lady, or become convinced that all of history has converged to make this moment the most consequential, the most dangerous, the most full of promise, and the most demanding of their involvement.

That is the paradox of youth.

The same developmental stage that can produce recklessness can also produce courage. The same intensity that can lead to destruction can also lead to sacrifice. The same inability to fully calculate long-term consequences can make young people impulsive, but it can also make them bold enough to challenge systems older adults have learned to tolerate.

This is why adolescence and early adulthood are so often linked with revolutionary thought. Young people are not simply immature adults. They are living through a period of profound neurological imbalance, where the systems that generate emotion, urgency, identity, belonging, reward, and meaning are highly active, while the brain region most responsible for restraint and long-term regulation is still maturing.

That immature frontal cortex helps explain the contradictions of youth. It helps explain the risk taking, the novelty seeking, the peer affiliation, the idealism, the impulsivity, and the willingness to believe that the present moment demands action.

In some cases, that combination leads to chaos. In others, it changes the world.

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Symptomology: Why Treating Symptoms Is Not the Same as Understanding Disease

Our society’s current understanding of disease is largely based on the concept of symptomology.

Symptomology is the process of focusing on, identifying, and categorizing symptoms. In other words, it is primarily concerned with the effects produced by disease. When a person experiences a certain collection of symptoms, modern medicine uses those symptoms to help differentiate one disease from another.

On the surface, this seems reasonable. If one person has one set of symptoms and another person has a different set of symptoms, it makes sense that we would give each condition a different name. This is how much of modern medicine organizes disease. Different symptoms are grouped together, labeled, and treated according to the diagnosis that best matches the presentation.

Because so much of what we have learned about disease has been filtered through this symptom-based model, the idea that disease may have more unified underlying causes can seem overly simplistic. However, the problem may not be that this idea is too simple. The problem may be that symptomology has made disease seem far more complicated than it needs to be.

Symptomology is based on a fundamental misconception. The misconception is that there are thousands of entirely separate diseases, each with different symptoms, different causes, and different treatments. This idea comes from the many different ways cells can malfunction and the wide range of symptoms that can result from that dysfunction.

The body has many different types of cells, and each type of cell can malfunction in different ways. As a result, the possible combinations of symptoms are almost endless. When cells malfunction, we can feel sick in many different ways. One person may experience blood sugar issues. Another may experience high blood pressure. Another may develop cardiovascular symptoms. Another may experience abnormal cell growth.

From the perspective of symptomology, these are treated as separate diseases. Each collection of symptoms receives its own name, its own category, and its own accepted treatment protocol.

The problem is that this approach often focuses more on managing the effects of disease than addressing the conditions that allowed the dysfunction to develop in the first place.

In this model, people are often told to take insulin to manage blood sugar rather than focusing on the deeper lifestyle, nutritional, and metabolic factors that may contribute to type 2 diabetes. They are told to take diuretics to manage hypertension rather than addressing the factors that may help normalize blood pressure. They are told to undergo a bypass operation rather than addressing the broader conditions connected to heart disease. They are told to undergo chemotherapy rather than considering disease through the larger lens of cellular health, toxicity, deficiency, and dysfunction.

This does not mean symptoms are irrelevant. Symptoms matter because they are signals. They tell us something is wrong. The issue is that modern medicine often treats symptoms as enemies that need to be eliminated, rather than messages that should be understood.

Diagnosis by symptoms is the process by which modern medicine gives each collection of symptoms a particular name. Once the symptoms are labeled, the goal often becomes suppressing or controlling them. Physicians are trained to eliminate symptoms, even when that requires powerful drugs, radiation, or invasive surgery.

This symptom-based approach leads the medical profession to look at symptoms individually, organize them into thousands of categories, label them as different diseases, and prescribe the currently accepted protocol to suppress or manage those symptoms.

The result is needless complexity. Disease becomes fragmented into thousands of separate labels, each treated as though it exists in isolation. This creates confusion because the focus stays on the outward expression of dysfunction rather than the underlying reason the body is malfunctioning.

In truth, each collection of symptoms, or each specific “disease,” can be understood as a different expression of malfunctioning cells.

When cells are healthy, properly nourished, and functioning in a clean internal environment, the body is more capable of maintaining order. When cells become deficient, toxic, damaged, or dysfunctional, the body begins to express that dysfunction through symptoms.

Because there are so many different types of cells and so many different ways those cells can malfunction, symptoms can appear in countless forms. This is why disease seems so complex from the outside. The expressions are different, but the deeper issue is still rooted in the function of the cells.

That is the limitation of symptomology. It gives names to the effects of disease, but naming the effect is not the same as understanding the cause.

A symptom is not the disease itself. It is the body’s way of revealing that something has gone wrong. When we focus only on suppressing symptoms, we may quiet the signal without addressing the reason the signal appeared in the first place.

A more meaningful approach to health would look beyond the label and ask a deeper question: why are the cells malfunctioning?

That question shifts the focus away from symptom management and toward the conditions that support or disrupt cellular function. It directs attention toward deficiency, toxicity, nutrition, environment, lifestyle, and the biological inputs the body depends on to function properly.

Symptomology may help categorize disease, but it should not become the entire way we understand health. The body is not a random collection of disconnected symptoms. It is an interconnected system, and symptoms are often the outward expression of deeper dysfunction within that system.

If we want to truly understand disease, we have to look beyond the name of the condition and begin asking what the body is trying to reveal.

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Oxidation, Reduction, and Redox: A Simple Overview

Over the last two or three decades, you may have heard marketers and wellness coaches talk about free radicals, antioxidants, health, and longevity. These ideas all belong to the larger oxidation-reduction cycle, which is part of the emerging field often called oxidative medicine, oxidative science, or, more commonly now, redox biology.

At the simplest level, oxidation and reduction describe the exchange of electrons.

Electrons are negatively charged. When electrons are removed through oxidation, the molecule becomes more positively charged and more acidic. When electrons are added through reduction, or antioxidant activity, the opposite happens. The molecule becomes more negatively charged and more alkaline.

This matters because many pathogens, toxins, and free radicals are more comfortable in positively charged, acidic environments. Antioxidant activity helps counter those threats by donating electrons, increasing negative charge, and supporting a more balanced internal environment.

Oxidation

Oxidation is the stealing or removal of electrons from a molecule. Molecules that tend to oxidize other substances are called oxidants.

A simple example is rust. When oxygen slowly takes electrons from iron, the iron oxidizes, and we see that process as rust. When something burns or explodes in the presence of oxygen, that is also oxidation, just happening much more rapidly.

In biological systems, oxidation can destabilize matter inside cells by stealing electrons. When molecules lose electrons, they become unstable and reactive unless they can find another electron to pair with and balance their charge.

This is one reason oxidants can be useful. The immune system uses oxidants as powerful antimicrobial and detoxifying agents. Most oxidants are oxygen-based molecules, which is why they are called reactive oxygen species, or ROS. Nitrogen and sulfur can also form their own reactive species, although they are less commonly discussed.

Some of the best-known oxidants in the functional medicine field include oxygen, hydrogen peroxide, ozone, and chlorine dioxide.

Free Radicals

A free radical is created when a molecule with a balanced pair of electrons loses one of those electrons through oxidation. The resulting molecule has an unpaired electron, which makes it highly reactive and potentially damaging to cells.

This is why the public was taught to fear free radicals throughout the 1980s, 1990s, and 2000s. Free radicals can damage cells, which is why antioxidants became so widely promoted as a way to fight free radical damage.

But the full story is more nuanced. Free radicals and reactive oxygen species are not always bad. They can be damaging when uncontrolled, but they also play important roles in immune defense, detoxification, and cellular signaling.

Reduction

Reduction is the opposite of oxidation. It is the giving of electrons, or a decrease in the state of oxidation.

Molecules that give up electrons in chemical reactions are called reductants, even though that may sound backwards. They may also be called reduced species, or RS.

Antioxidants help balance this system. They act as small molecular catalysts that help oxidants give their extra electrons to reductants, neutralizing both electrical charge and biological reactivity.

The body’s own antioxidants, such as glutathione, can perform tens of millions of these reactions per minute. After these reactions occur, reactive oxygen species and reductants can turn back into salt water, which is where they came from in the first place.

Redox

Not too long ago, scientists began using the term redox as a shorter way to describe oxidation-reduction processes. Redox is simply short for reduction-oxidation.

Instead of repeatedly saying oxidation, reduction, reactive oxygen species, and reductants, the field began using redox as an umbrella term. That is where phrases like redox molecules, redox reactions, and redox signaling molecules come from.

Reactive oxygen species and reduced species are collectively called redox molecules or redox signaling molecules.

These redox molecules are by-products of metabolism. Mitochondria use them to support cells in many ways, and bacteria use them to support the microbiome.

Mitochondrial Redox Molecules

Mitochondria produce energy by burning fat or sugar in the presence of oxygen to make ATP, the main energy currency of the cell. This process is essentially metabolism, but instead of the concentrated heat of a conventional fire, the mitochondria perform this process inside the cell.

As mitochondria produce ATP, they also produce oxygen-based redox molecules as by-products.

These mitochondrial redox molecules are made primarily of oxygen and help form the communication network between mitochondria and human cells. Aerobic exercise dramatically increases the need for this process because it increases the body’s demand for energy.

Bacterial Redox Molecules

Bacteria also produce redox molecules.

When bacteria metabolize food, they create their own variety of redox molecules as by-products. These are different from mitochondrial redox molecules because they are made primarily of carbon.

Each carbon-based bacterial redox molecule may have around 17 potential binding sites, which represents its signaling capacity. Since there are tens of thousands of bacterial species, and each species can produce roughly 10 to 15 different varieties of these redox molecules, the signaling potential becomes enormous.

This is one reason the microbiome is so biologically important. Bacteria are not just passive organisms living inside the body. Through metabolism and redox signaling, they participate in communication, regulation, and the body’s internal ecology.

Oxidative Stress

Oxidative stress refers to the amount of time and degree to which oxidants outnumber reductants.

Oxidative stress can become damaging when the body does not have enough antioxidants and reductants available to neutralize oxidants. This is especially true when oxidative stress becomes chronic and uncontrolled.

However, oxidative stress is not always bad. It can be beneficial when used therapeutically and in the right context. The problem is not oxidation itself. The problem is uncontrolled oxidation without the proper balancing forces.

Tight Junctions

Tight junctions are the filaments that normally hold the cells of our membranes together. Their job is to keep unwanted substances out while still allowing authorized substances to pass through when needed.

When tight junctions are healthy, they open and close on demand. But when tight junctions become damaged, they can remain open and allow unauthorized substances to pass through. This can create many different health problems because substances that should have remained outside certain tissues or membranes are allowed to enter.

This is another reason redox balance matters. The body depends on controlled communication, proper barrier function, and the ability to regulate what enters and leaves different spaces.

The Bigger Picture

Oxidation and reduction are not abstract chemistry terms. They describe one of the most important balancing systems in the body.

Oxidants can damage cells when uncontrolled, but they also support immune defense and detoxification. Antioxidants and reductants help balance oxidants by donating electrons. Mitochondria and bacteria both produce redox molecules as by-products of metabolism. These redox molecules help cells, mitochondria, and the microbiome communicate.

The goal is not to eliminate oxidation. The goal is balance.

Too much uncontrolled oxidation creates stress and damage. Too little oxidative activity would impair immune defense, detoxification, and signaling. Health depends on the body’s ability to manage both sides of the redox cycle.

That is why redox biology matters. It gives us a better way to understand energy production, oxidative stress, inflammation, detoxification, immune function, mitochondrial communication, microbiome signaling, and cellular health.

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Every Problem Contains the Need for a Solution

Every disease, challenge, and problem has an equal and opposite force that can counterbalance it. This is a simple matter of polarity, and in many ways, it is one of the foundational patterns of nature.

For the negative to exist, there must also be a positive. There is darkness, and there is light. There is hot, and there is cold. For every yin, there is a yang. Highs cannot exist without lows.

The same idea can be applied to problems.

The moment a problem is created, the universe, or consciousness itself, simultaneously calls the solution into existence as the problem’s polar opposite. Whether we are talking about disease, systemic problems in society, harmful plans, or suppressive people, the problem cannot exist without the possibility of a solution.

The difficulty is that problems are often crafted, executed, and publicized better than solutions are. Problems tend to be louder. They are easier to see. They create fear, urgency, confusion, and emotional reaction. Solutions often require more awareness, patience, courage, and discernment.

That is why it can feel like the problem is more powerful than the answer.

But the presence of the problem does not mean the absence of a solution. It may simply mean the solution has not been recognized, organized, or acted upon yet.

This matters because the way we look at problems changes how we respond to them. If we believe a problem exists without an opposing force, we become passive. We assume the situation is fixed, hopeless, or too large to challenge. But if we understand that every problem contains the need for its opposite, we begin looking for the counterforce.

Disease invites healing.

Darkness reveals the need for light.

Suppression creates the conditions for liberation.

Confusion calls for clarity.

The rule of nature is not that problems disappear on their own. The rule is that every negative force implies the existence of its positive counterpart. The work is learning how to find it, strengthen it, and bring it forward.

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Nutrition/Supplementation, Gut Health Ryan Crossfield Nutrition/Supplementation, Gut Health Ryan Crossfield

Are Commercial Probiotics as Natural as They Seem?

Probiotics are usually marketed as a simple way to support gut health, but many commercial probiotic supplements and foods may not be as beneficial as people are led to believe.

One of the concerns is that many commercial probiotics use strains that are easier to produce, control, transport, and store. The healthiest and most potent strains of probiotics are not always stable outside the body. Nature did not design them to reproduce and live indefinitely in commercial production environments. Their natural homes are in soil, on the surface of plants, and inside the microbiome of living creatures.

That makes growing, transporting, and storing probiotics properly a sensitive process.

For many companies, this creates a practical problem. Truly natural, delicate, and diverse microbial strains may be harder to preserve and sell at scale. Commercial food and supplement production often favors products that are cheap, easy to standardize, and shelf-stable. As a result, some products may be sterilized, homogenized, or altered in ways that remove many of the natural properties people are actually looking for.

This is why some companies use proprietary strains that are easier to control through commercial processes. These strains may be selected, modified, or developed to survive manufacturing, packaging, shipping, and storage better than naturally occurring microbes.

So how can you tell if a probiotic may not be naturally occurring?

One clue is the label. Many commercial strains are followed by a number, such as Bacillus coagulans GBI-30 6086. This kind of labeling can indicate that the strain is proprietary and possibly patented. In other words, it may be a commercial version of microbiota developed for production rather than a naturally occurring organism used in its original form.

That distinction matters because naturally occurring microorganisms cannot be patented in the same way proprietary commercial strains can.

The larger point is that probiotics should not be accepted blindly just because the label sounds healthy. A product can say “probiotic” and still be far removed from the kind of microbial exposure humans historically received through soil, plants, fermented foods, animals, and natural environments.

This does not mean every probiotic supplement is useless. It means the source, strain, processing, storage, and form matter.

Gut health is not built by a label. It is built by the total environment we create for the microbiome, including food quality, fiber, fermented foods, soil exposure, plant diversity, stress regulation, sleep, and reducing the things that damage gut ecology in the first place.

A probiotic may help, but it should not be treated as a shortcut around the deeper work of supporting the microbiome naturally.

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Sugar Burns Through Magnesium

Sugar does not enter the body for free. It has to be metabolized, and that process requires nutrients.

One molecule of sugar requires 56 molecules of magnesium, along with other minerals, for the body to metabolize it properly. That matters because magnesium is already involved in hundreds of biological processes, including energy production, muscle function, nervous system regulation, blood sugar control, and overall metabolic health.

This is one reason whole fruit is different from added or concentrated sugar.

Whole fruits grown naturally contain the sugar they provide along with the minerals, fiber, water, and plant compounds that help the body handle that sugar. In this view, naturally grown whole fruit contains the approximate 1:56 ratio needed to metabolize its sugar without creating the same mineral burden.

Added and concentrated sugars are different. When sugar is removed from its natural context and added to processed foods, sweet drinks, desserts, candy, syrups, or other refined products, it no longer comes packaged with the same support system.

That means the body still has to metabolize the sugar, but now it may need to pull magnesium from other biological processes in order to do so.

This is the real problem with added sugar. It is not only that it adds calories. It is that it can create a nutrient cost. The body may have to use minerals it needs elsewhere just to process the sugar coming in.

Over time, that can matter. If someone regularly eats added or concentrated sugar while failing to replenish minerals through a nutrient-dense diet, the body may be pushed toward deficiency. Magnesium is too important to waste on a constant stream of refined sugar.

The simple takeaway is this: sugar in whole food form is not the same as sugar stripped from its natural context.

Whole fruit comes with support. Added sugar creates demand.

If the goal is better energy, blood sugar control, and mineral balance, reducing added and concentrated sugars is one of the simplest places to start.

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General, Nutrition/Supplementation Ryan Crossfield General, Nutrition/Supplementation Ryan Crossfield

Nine Natural Ways to Support Insulin Sensitivity

Insulin resistance is one of the major drivers of poor metabolic health. When the body becomes less responsive to insulin, blood sugar becomes harder to control, the pancreas has to work harder, and the risk of type 2 diabetes increases over time.

The good news is that several foods, spices, herbs, and plant compounds have been studied for their ability to support insulin sensitivity and improve blood sugar control. None of these should be treated as a replacement for medical care, especially for someone already diagnosed with diabetes, but they are worth understanding because they show how strongly the body can respond to nutritional inputs.

Here are nine natural ways to support insulin sensitivity.

1. Turmeric

Turmeric contains curcumin, a compound known for its anti-inflammatory and metabolic effects.

In a study published in the American Diabetes Association’s journal Diabetes Care, 240 prediabetic adults were given either 250 milligrams of curcumin or a placebo every day. After nine months, none of the participants taking curcumin had developed diabetes, while 16.4 percent of the placebo group had developed type 2 diabetes.¹

That suggests curcumin may be a powerful tool for supporting blood sugar regulation in people at risk for diabetes.

2. Ginger

Ginger has also been studied for its effect on blood sugar and insulin sensitivity.

In a 2014 randomized, double-blind, placebo-controlled trial, 88 volunteers with diabetes were divided into two groups. One group received a placebo every day, while the other received three one-gram capsules of ginger powder.

After eight weeks, the ginger group reduced fasting blood sugar by 10.5 percent. The placebo group, on the other hand, increased fasting blood sugar by 21 percent. Insulin sensitivity also improved significantly more in the ginger group.²

Another study found that 1,600 milligrams per day of ginger improved eight markers of diabetes, including insulin sensitivity. Since 1,600 milligrams is only about a quarter teaspoon, this suggests that large doses may not be necessary to see meaningful effects.³

3. Cinnamon

Cinnamon has been used for thousands of years as both a spice and a warming medicine traditionally used to support the blood.

A meta-analysis published in the Journal of Medicinal Food reviewed eight studies and concluded that cinnamon, or cinnamon extract, lowers fasting blood sugar levels.⁴

One way cinnamon may work is by slowing how quickly the stomach empties after eating. This can reduce the speed at which glucose enters the bloodstream after a meal.

Sprinkling about half a teaspoon of cinnamon into meals or smoothies may help reduce blood sugar levels, even in people with type 2 diabetes.⁵

When choosing cinnamon, look for Ceylon cinnamon, named after the old name for Sri Lanka, where it was originally harvested. Many products labeled as cinnamon are actually cassia, which is related to true cinnamon but not the same.

4. Olive Leaf Extract

Olive leaf extract has been shown to improve insulin sensitivity.

Researchers at the University of Auckland conducted a randomized, double-blind, placebo-controlled study involving 46 overweight men. One group received capsules containing olive leaf extract, while the other group received a placebo.

After 12 weeks, olive leaf extract lowered insulin resistance by an average of 15 percent. It also increased the productivity of the insulin-generating cells in the pancreas by 28 percent. The researchers noted that the results were “comparable to common diabetic therapeutics,” particularly metformin.⁶

That makes olive leaf extract an interesting compound in the conversation around blood sugar regulation and insulin function.

5. Berries

Berries may help reduce the insulin response to a meal.

In a study of healthy women in Finland, volunteers were given white and rye bread to eat, either with or without a selection of pureed berries. The women who ate the plain bread had a quick spike in glucose after eating. The women who ate the bread with berries had a much lower spike in after-meal blood sugar.⁷

This matters because berries may help blunt the blood sugar response to higher-carbohydrate foods. They are also rich in polyphenols, fiber, and other compounds that support metabolic health.

6. Black Seed

Black seed, or Nigella sativa, is also known as Roman coriander, black sesame, black cumin, and black caraway.

Just two grams of black seed per day has been shown to significantly reduce blood sugar and glycation end-product formation. The same dose may also improve insulin resistance.⁸

Glycation end-products are compounds that form when sugar reacts with proteins or fats in the body. They are associated with oxidative stress, inflammation, and tissue damage, which makes black seed especially interesting for metabolic health.

7. Spirulina and Soy

Spirulina is a type of blue-green algae that provides protein, calcium, iron, and magnesium. It can be eaten as a food, though in the United States it is most often consumed in powder form and added to smoothies or shakes.

In a study conducted in Cameroon, researchers compared spirulina and soy powder to see which was more effective for insulin sensitivity. The study involved volunteers suffering from insulin resistance related to antiretroviral drugs used in HIV treatment.

One group received 19 grams of spirulina per day for eight weeks, while the other received 19 grams of soy.

At the end of the trial, the soy group increased insulin sensitivity by 60 percent, which is a meaningful improvement. But the spirulina group’s insulin sensitivity increased by an average of 224.7 percent. While 69 percent of the soy group improved insulin sensitivity, every volunteer in the spirulina group improved.⁹

That is a strong result, especially given the metabolic challenge created by antiretroviral treatment.

8. Berberine

Berberine is a bitter compound found in the roots of plants such as goldenseal and barberry. Its bitterness may be a clue to its strength as a blood sugar-supporting compound.

In a Chinese study of 36 patients, researchers found that three months of treatment with berberine was as effective as metformin in lowering blood sugar.¹⁰

Berberine is powerful, but it should be used carefully. Herbs like berberine are generally considered safer than many pharmaceutical compounds, but they are not free from side effects or interactions. Berberine should be used under the guidance of a medical herbalist or experienced integrative medical practitioner, especially by anyone taking medication for blood sugar, blood pressure, or other health conditions.

9. Resistant Starches

Resistant starches are different from many other carbohydrate sources because they are lower on the glycemic index and are broken down slowly in the large intestine. Their “resistance” to digestion means they are less likely to cause sharp spikes in blood sugar.

They also have time to ferment, which gives beneficial gut bacteria an opportunity to flourish. As a source of fermentable fiber, resistant starches may help improve insulin sensitivity and reduce body fat.¹¹ ¹²

Examples of resistant starches to include in the diet include:

  • Amaranth

  • Cassava

  • Chickpeas

  • Millet

  • Muesli

  • Soaked beans of all varieties

  • Unprocessed oats

  • Unripe bananas

Resistant starches are especially useful because they connect blood sugar regulation with gut health. They feed the microbiome, support short-chain fatty acid production, and may help improve the way the body handles glucose.

The Bigger Picture

Insulin resistance does not develop in isolation. It is influenced by food quality, movement, sleep, stress, inflammation, gut health, body composition, and the body’s overall metabolic environment.

These nine foods and compounds are not magic fixes, but they do show that the body responds to the information it receives. Turmeric, ginger, cinnamon, olive leaf extract, berries, black seed, spirulina, berberine, and resistant starches all appear to influence blood sugar regulation in meaningful ways.

The goal is not to chase every supplement or turn food into medicine in a rigid way. The goal is to understand that the body’s response to insulin can be improved when the right inputs are provided consistently.


References

  1. Chuengsamarn, Somlak, et al. “Curcumin Extract for Prevention of Type 2 Diabetes.” Diabetes Care 35, no. 11, November 2012, 2121-2127. https://doi.org/10.2337/dc12-0116

  2. Mozaffari-Khosravi, Hassan, et al. “The Effect of Ginger Powder Supplementation on Insulin Resistance and Glycemic Indices in Patients with Type 2 Diabetes: A Randomized, Double-Blind, Placebo-Controlled Trial.” Complementary Therapies in Medicine 22, no. 1, February 2014, 9-16. https://doi.org/10.1016/j.ctim.2013.12.017

  3. Arablou, Tahereh, et al. “The Effect of Ginger Consumption on Glycemic Status, Lipid Profile and Some Inflammatory Markers in Patients with Type 2 Diabetes Mellitus.” International Journal of Food Sciences and Nutrition 65, no. 4, June 2014, 515-520. https://doi.org/10.3109/09637486.2014.880671

  4. Davis, Paul A., and Wallace Yokoyama. “Cinnamon Intake Lowers Fasting Blood Glucose: Meta-Analysis.” Journal of Medicinal Food 14, no. 9, April 2011, 884-889. https://doi.org/10.1089/jmf.2010.0180

  5. Hlebowicz, Joanna, et al. “Effect of Cinnamon on Postprandial Blood Glucose, Gastric Emptying, and Satiety in Healthy Subjects.” The American Journal of Clinical Nutrition 85, no. 6, June 2007, 1552-1556. https://doi.org/10.1093/ajcn/85.6.1552

  6. de Bock, Martin, et al. “Olive Leaf Polyphenols Improve Insulin Sensitivity in Middle-Aged Overweight Men: A Randomized, Placebo-Controlled, Crossover Trial.” PLOS ONE 8, no. 3, 2013, e57622. https://doi.org/10.1371/journal.pone.0057622

  7. Törrönen, Riitta, et al. “Berries Reduce Postprandial Insulin Responses to Wheat and Rye Breads in Healthy Women.” The Journal of Nutrition 143, no. 4, January 2013, 430-436. https://doi.org/10.3945/jn.112.169771

  8. Bamosa, Abdullah, et al. “Effect of Nigella sativa Seeds on the Glycemic Control of Patients with Type 2 Diabetes Mellitus.” Indian Journal of Physiology and Pharmacology 54, October 2010, 344-354.

    Daryabeygi-Khotbehsara, Reza, et al. “Nigella sativa Improves Glucose Homeostasis and Serum Lipids in Type 2 Diabetes: A Systematic Review and Meta-Analysis.” Complementary Therapies in Medicine 35, December 2017, 6-13. https://doi.org/10.1016/j.ctim.2017.08.016

  9. Marcel, Azabji-Kenfack, et al. “The Effect of Spirulina platensis versus Soybean on Insulin Resistance in HIV-Infected Patients: A Randomized Pilot Study.” Nutrients 3, no. 7, July 2011, 712-724. https://doi.org/10.3390/nu3070712

  10. Dong, Hui, et al. “Berberine in the Treatment of Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis.” Evidence-Based Complementary and Alternative Medicine 2012, October 2012, 591654. https://doi.org/10.1155/2012/591654

  11. den Besten, Gijs, et al. “The Role of Short-Chain Fatty Acids in the Interplay Between Diet, Gut Microbiota, and Host Energy Metabolism.” Journal of Lipid Research 54, no. 9, September 2013, 2325-2340. https://doi.org/10.1194/jlr.R036012

  12. Zheng, Jolene, et al. “Resistant Starch, Fermented Resistant Starch, and Short-Chain Fatty Acids Reduce Intestinal Fat Deposition in Caenorhabditis elegans.” Journal of Agricultural and Food Chemistry 58, no. 8, April 2010, 4744-4748. https://doi.org/10.1021/jf904583b


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Detoxification Ryan Crossfield Detoxification Ryan Crossfield

Potassium Iodide and Radiation Exposure: What It Actually Does

Potassium iodide is commonly discussed as one of the most important protective tools in the event of certain types of radiation exposure. Its primary role is to protect the thyroid.

It works by saturating the thyroid with non-radioactive iodide/iodine so that radioactive iodine-131 is less likely to enter the thyroid and damage it. This matters because the thyroid readily takes up iodine, and in a radiation event involving radioactive iodine, that same uptake pathway can become a source of harm.

Potassium iodide is not a general radiation antidote. It does not protect the entire body from all forms of radiation, and it does not remove radioactive material already distributed throughout the body. Its main protective role is specific to the thyroid and radioactive iodine exposure.

Radiation exposure should always be treated as a serious medical situation. If you suspect radiation exposure, especially if you experience sudden acute pain in the gut area or other concerning symptoms, speak with a qualified health practitioner or seek emergency medical guidance immediately.

Some resources commonly discussed for radiation detoxification support include:

Apple pectin powder.

Liposomal vitamin C, such as the product made by LivOn Labs.

Ken Rohla has also recommended and sold products through freshandalive.com, including “Illumodine™,” described as monoatomic iodine programmed with anti-frequencies to radioactive elements; Liquid Manna’s “Rad D-Tox,” described as ORMES elements programmed with anti-frequencies; and Dr. Morse’s “No-Glo Radiation Detox.”

The main point is that potassium iodide has a specific purpose: protecting the thyroid from radioactive iodine. It should be used appropriately, ideally under public health or medical guidance, and not confused with a complete treatment for radiation poisoning.

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Sleep Ryan Crossfield Sleep Ryan Crossfield

Better Sleep Starts with Better Light

How Light Affects Your Sleep

Light plays a major role in how your body knows when to wake up, when to feel alert, and when to prepare for sleep. This process is largely guided by the suprachiasmatic nucleus, or SCN, which acts as the body’s master clock.

The light-detecting cells in our eyes notify the SCN when there is light outside. These cells are especially good at detecting blue light, which is naturally found in sunlight. This is helpful in the morning because it tells the body that the day has begun. The problem is that blue light in the evening can send the body the wrong message.

When the body is preparing for sleep, exposure to blue light can make it harder for the brain to recognize that night has arrived. In practical terms, this means the timing, amount, and source of light we are exposed to can influence how well we sleep.

Sleep experts commonly point to four important strategies.

Get Sunlight First Thing in the Morning

Being exposed to sunlight first thing in the morning sends your SCN a simple message: good morning.

After spending the previous few hours in darkness, your system is more sensitive to light in the morning. That means even a relatively small amount of morning light can be effective in helping your body recognize that the day has started.

This does not mean looking directly at the sun. You should never stare at the sun because it can permanently damage your retina. The goal is simply to get natural outdoor light into your eyes safely.

Spend Time Outside During the Day

Spending time outside during the daytime helps as well, even when it is cloudy. Outdoor light is still much brighter than indoor light, which is one reason daylight exposure can be so useful for supporting the body’s internal rhythm.¹

Being outside helps make the master clock more robust. It also helps synchronize that central clock with the outside day and with the peripheral clocks throughout the body.

In other words, light exposure is not only about waking up in the morning. The light you get throughout the day helps reinforce your body’s internal rhythm.

Be Mindful of Screens at Night

Blue light-emitting screens can interfere with sleep, especially when they are used close to bedtime. Some experts recommend avoiding screens at least an hour before your usual bedtime.¹

The effect may depend on the type of screen and how close it is to your face. A television across the room does not appear to be as disruptive as a phone, tablet, or computer screen held close to the eyes. The amount of natural light you get during the day may also matter. If you were exposed to a lot of outdoor light earlier in the day, you may be less affected by screen light at night.¹

Children are more sensitive to light, which means they may be more affected by evening screen exposure. A 2024 National Sleep Foundation consensus statement found that screen use can impact sleep health across the lifespan, with special concern for children and adolescents.²

Sleep in a Cool, Dark Room

Many experts agree that a good sleep environment should be cool and completely dark. If you wake up in the middle of the night, it is best to avoid turning on bright lights, especially devices that emit blue light, such as a phone or tablet.

The evidence for this recommendation is strongest in children, though the body of evidence continues to evolve for other age groups. As sleep researcher Erin Flynn-Evans explained, “The influence of light never ceases to amaze me in that every year it seems we learn something new about how powerful light is and how [even] little light exposure is impactful.”¹

The Bottom Line

Your body is constantly paying attention to light. Morning sunlight helps tell your brain the day has started. Daytime outdoor light helps strengthen your internal clock. Evening blue light can confuse that system, especially when it comes from screens close to your face. A cool, dark room helps protect the sleep environment your body needs.

Better sleep does not always begin at night. Often, it begins with the light you get first thing in the morning and the light you choose to limit before bed.

References

  1. “Screen Time and Sleep: It’s Different for Adults,” Restorative Sleep, Stanford Lifestyle Medicine, August 8, 2024. https://longevity.stanford.edu/lifestyle/2024/08/08/screen-time-and-sleep-its-different-for-adults/

  2. Lauren E. Hartstein et al., “The Impact of Screen Use on Sleep Health across the Lifespan: A National Sleep Foundation Consensus Statement,” Sleep Health 10, no. 4, August 2024, 373–384. https://doi.org/10.1016/j.sleh.2024.05.001

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Nutrition/Supplementation Ryan Crossfield Nutrition/Supplementation Ryan Crossfield

Critical Opinion: Resisting the 'Built to Gain Weight' Default: It's Misused to Excuse Fucked Food Industry

Dr. Tamas Horvath, chair of the Department of Comparative Medicine at the Yale School of Medicine, succinctly puts it: “Our default is to put on weight.”

While this captures a key insight from his neuroscience research, highlighting how hypothalamic circuits evolved to promote hunger and energy storage as a survival mechanism in environments of scarcity (where prioritizing intake prevented starvation), I resist interpreting it as nature's overriding blueprint.

It risks being taken out of context, oversimplified, and weaponized to evade accountability.

All too often, people invoke Horvath's phrase as a handy biological excuse. This absolves the consequences of fundamentally fucking with our food supply. Industries engineer ultra-processed, hyper-palatable products loaded with sugars, fats, and additives that hijack our reward systems and disrupt satiety signals. At the same time, this shifts the burden of weight gain squarely onto individuals as if it's an inescapable genetic fate rather than a predictable outcome of environmental manipulation by food industries.

Yet, Horvath's "default" is not an inevitable drive toward endless accumulation but a conditional bias. It is a neural subroutine that activates strongly in caloric surplus, like today's always-available, engineered foods. This leads to weight gain because our brains err on the side of caution against historical famines.

This mechanism ultimately serves a grander default: homeostasis, the body's dynamic equilibrium that regulates energy, hormones, and metabolism to sustain health and adaptability, not obesity.

Nature's true priority is this homeostatic health, achieved through:

  • Natural inputs (nutrient-dense, whole foods that signal satiety properly),

  • Adaptation (metabolic flexibility to burn or store as needed), and

  • Cyclical habitats (feast-famine rhythms, seasonal shifts, and circadian cycles that reset setpoints and prevent drift).

Arguing from evolutionary logic, if perpetual weight gain were the intent, it would sabotage survival:

  • Excess fat slows mobility (reducing escape efficiency by up to 10% per extra 10 kg, per biomechanical studies),

  • Fosters metabolic inflexibility (insulin resistance that hampers fuel-switching in stress), and

  • Heightens vulnerability to predators, infections, or resource shortages. These are maladaptive traits that natural selection would purge, as seen in lean ancestral fossils and balanced wild ecosystems.

Thus, Horvath's observation clarifies a modern mismatch trap. But subordinating it to homeostasis, and rejecting its misuse as an individual scapegoat, reveals nature's design for resilient balance.

It urges us to demand systemic fixes to our tainted food environment rather than accept weight gain as personal destiny or evolutionary inevitability.

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