Nutrition
Food is not just fuel — it is information. Every bite you take sends molecular signals to your genes, hormones, immune system, and microbiome. The question is whether those signals are promoting health or disease.
The 5 Non-Negotiable Nutrition Principles
These principles are agreed upon — with remarkable consistency — by all six experts featured on this site. Master these and you will have solved 90% of your health challenges.
Eliminate the Metabolic Destroyers
The four foods most consistently linked to chronic disease, metabolic dysfunction, and accelerated aging are: refined sugar, refined carbohydrates, industrial seed oils (canola, soybean, corn, cottonseed, sunflower), and ultra-processed foods. Removing these alone produces dramatic improvements in energy, body composition, and inflammatory markers within weeks.
Understand and Control Insulin
Insulin is the master metabolic hormone. Every food choice either raises or lowers insulin. A diet that chronically elevates insulin drives fat storage, inflammation, hormonal disruption, and eventually metabolic disease. Up to 88% of American adults are metabolically unhealthy. Learning to eat in a way that keeps insulin low and stable is the single most impactful dietary change most people can make.
Prioritize Nutrient Density
The goal of optimal nutrition is not to eat less — it is to eat more of what your body actually needs. Organ meats, pasture-raised eggs, grass-fed beef, wild-caught fatty fish, and dark leafy greens are among the most nutrient-dense foods on earth. Beef liver alone provides more bioavailable vitamin A, B12, folate, copper, and zinc than any plant food.
Heal the Gut Microbiome
The gut microbiome is a central regulator of immune function, mood, metabolism, and even gene expression. Healing the gut through fermented foods (kimchi, sauerkraut, kefir), prebiotic fiber, and the elimination of gut-disrupting compounds (gluten, industrial dairy, alcohol, NSAIDs) is foundational to every other aspect of health.
Restore Metabolic Flexibility
A metabolically healthy person can burn both glucose and fat for fuel. Most modern people have lost this flexibility through decades of high-carbohydrate eating. Restoring metabolic flexibility through intermittent fasting and carbohydrate reduction is transformative for energy, body composition, and cognitive function. The transition takes 2–4 weeks and is well worth the temporary adaptation period.
Correct Micronutrient Deficiencies First
Before optimizing macros or trying advanced protocols, address the foundational deficiencies that affect the majority of the population. Dr. Rhonda Patrick's research identifies vitamin D (deficient in 70%+ of Americans), omega-3 fatty acids (low intake carries the same mortality risk as smoking), and magnesium (required for 300+ enzymatic reactions) as the three most impactful micronutrients to optimize. Sulforaphane — found in broccoli sprouts — is her top food-based intervention for activating the Nrf2 pathway, which governs the body's antioxidant and detoxification response.
Intermittent Fasting: The Metabolic Reset
Intermittent fasting is not a diet — it is a timing strategy that allows insulin levels to drop completely between meals. When insulin is low, the body shifts from fat storage mode to fat burning mode. After 12–16 hours of fasting, the liver begins producing ketone bodies, and after 16–18 hours, autophagy (cellular cleanup) is activated.
| Protocol | Eating Window | Fasting Period | Best For |
|---|---|---|---|
| 12:12 | 12 hours | 12 hours | Beginners — start here |
| 16:8 | 8 hours | 16 hours | Most people — optimal balance |
| 18:6 | 6 hours | 18 hours | Advanced — deeper fat burning |
| OMAD | 1–2 hours | 22–23 hours | Experienced fasters only |
What to Consume During Fasting Periods
Water (with a pinch of sea salt), black coffee, and plain tea are all acceptable during fasting periods and do not break a fast. Avoid anything with calories, artificial sweeteners, or dairy, as these can stimulate an insulin response and interrupt the fasting state.
The IronAgeWisdom Food Guide
Based on the consensus of all six experts, these are the foods that consistently appear on the "eat more" and "eliminate" lists.
Eat More Of These
- Grass-fed beef, bison, and lamb
- Pasture-raised eggs
- Wild-caught salmon, sardines, mackerel
- Beef liver and organ meats
- Leafy greens (kale, spinach, arugula)
- Cruciferous vegetables (broccoli, cauliflower)
- Avocados and avocado oil
- Extra virgin olive oil
- Butter and ghee from grass-fed cows
- Berries (low-glycemic fruits)
- Nuts and seeds (macadamia, walnuts)
- Bone broth
Eliminate or Minimize
- All refined sugars and sweeteners
- Bread, pasta, and refined grains
- Canola, soybean, corn, and cottonseed oil
- Ultra-processed packaged foods
- Fast food and fried foods
- Sodas and fruit juices
- Margarine and vegetable shortening
- Most commercial breakfast cereals
- Conventional dairy with added hormones
- Artificial sweeteners (disrupt gut flora)
- Alcohol (initially — impairs fat burning)
- Gluten-containing grains (for sensitive individuals)
The Seed Oil Problem
Industrial seed oils — canola, soybean, corn, cottonseed, sunflower, and safflower — are perhaps the most damaging change to the human diet in the last 100 years. These oils are extraordinarily high in omega-6 linoleic acid, which oxidizes easily and incorporates into cell membranes, impairing mitochondrial function and driving systemic inflammation.
Dr. Mercola, Dr. Saladino, and Gary Brecka all identify seed oil elimination as one of the highest-leverage dietary interventions available. Replace them with: butter, ghee, tallow, lard, coconut oil, and extra virgin olive oil.
Where Seed Oils Hide
Seed oils are in virtually every restaurant-cooked meal, packaged snack, salad dressing, mayonnaise, and "healthy" cooking spray. Reading ingredient labels and cooking your own food are the most reliable ways to eliminate them.
Get the Complete Nutrition Protocol
Download the free 50-page health guide for the full ancestral eating framework, supplement guide, and 30-day meal planning protocol.