Podcast Summary: The Dr. Josh Axe Show

Episode: Restore Your Youthful Microbes: The Natural Way to Fix Hormones & Skin

Date: March 5, 2026
Host: Dr. Josh Axe
Guest: Dr. William Davis (Cardiologist, best-selling author of “Wheat Belly,” “Super Gut,” and “Super Body”)

Episode Overview

This episode dives deep into the root causes of chronic disease, especially the central role of the gut microbiome in metabolic, hormonal, and cardiovascular health. Dr. Josh Axe and Dr. William Davis discuss why conventional wisdom around nutrition, pharmaceuticals, and even mainstream medical practices often do more harm than good—and how restoring the microbiome with natural food, lifestyle, and targeted probiotics can repair hormones, skin, and overall health. Together, they challenge industry-driven myths, explain the dangers of overused medications and surgeries, and share practical strategies for aging vibrantly and living disease-free.

Key Discussion Points and Insights

1. The Transformation and Dangers of Modern Wheat and Grains

• Wheat’s Modern History: Wheat is not the natural plant people think—it’s a laboratory-created crop, hybridized and exposed to chemicals or radiation for higher yields, without safety testing for human consumption ([03:41]).
• Appetite Amplification: The altered gliadin protein in wheat acts as an opioid on the brain, increasing appetite and encouraging overconsumption ([04:40]).
• Amylopectin A & Blood Sugar: Modern grains, regardless of type, contain carbohydrates rapidly digested into sugars, leading to spikes in blood glucose, abdominal fat gain, and fueling today’s epidemics of obesity and type 2 diabetes ([06:15]).
• Hybridization vs. Genetic Modification: Wheat is not GMO, but “hybridization” and mutagenesis introduce uncontrolled changes, making the end product even more unpredictable and harmful ([08:27]).

“They’ve created this little monster. And then they had the unwitting complicity of the USDA and other agencies to say, eat more of it.” – Dr. Davis [10:19]

2. The Collapse of Conventional Medicine and the Food Industry

• Systemic Myths: The food pyramid and government guidelines have long promoted diets that create disease at a cellular level ([11:42]).
• GLP-1 Drugs (Ozempic, Wegovy, etc.):
  • Dr. Davis warns that these drugs, popular for weight loss, lead to significant muscle loss. Most weight lost is regained as fat, not muscle—with higher future risk for diabetes, heart disease, frailty, and early death ([12:45]-[16:55]).

“If a woman loses 10% or more of her body weight… They die. Several years younger.” – Dr. Davis [14:29]

• Kickbacks in Healthcare: Physicians and groups are often financially incentivized to prescribe, dispense, and perform procedures, distorting care ([16:55]).
• Bariatric Surgery Risks: These are not harmless “solutions.” High rates of malnutrition, SIBO (small intestinal bacterial overgrowth), muscle loss, suicide, and further health decline are routine. The evidence is tainted by industry ties ([18:03]).

3. The Microbiome as the Missing Link to True Health

• Antibiotic Overexposure: Most people have taken approximately 30 rounds of antibiotics by age 40, often unnecessarily ([22:04]).
• SIBO and Disease: Antibiotics wipe out protective gut bacteria, allowing ‘fecal microbes’ to take over the small intestine, causing inflammation, endotoxemia (toxins leaking into blood), and a multitude of conditions—brain fog, autoimmune illness, rosacea, heart disease, and more ([23:45]–[26:07]).

“All it takes...one course of azithromycin...and you've killed hundreds of species. ... And one of the things they were doing was suppressing the over-proliferation of fecal microbes.” – Dr. Davis [22:45]

• Leaky Gut is Real: Once controversial, it’s now scientifically validated and widely agreed upon as a frequent root cause of systemic disease ([24:39]).

4. Natural Strategies to Restore Gut Health and Youthful Vitality

• Lifestyle over Medication: The true path to weight loss and health is eating in line with our evolutionary heritage—real, minimally processed food, not calorie restriction or drugs ([19:32]).
• The Gut-Muscle Axis: Muscle maintenance is crucial. Dr. Davis stresses losing weight without losing muscle by restoring effective gut flora ([19:32]).
• SIBO Yogurt: Dr. Davis’ homemade probiotic “yogurt” (not store-bought) uses strains like Lactobacillus reuteri, L. gasseri, and Bacillus subtilis, fermented for maximal potency, to recolonize the gut and eradicate SIBO ([29:51]-[35:00]).
• Probiotic Approach: Select strains are chosen for their ability to colonize the small intestine and directly combat bacterial overgrowth.
• Other core strategies:
  • Track muscle using grip strength or bioimpedance scales ([19:32]).
  • Avoid calorie restriction and industrial foods; focus on fermented foods, basic nutrient repletion (Vitamin D, magnesium, etc.) ([29:51]).

"The real solution are simple things you do in your kitchen and your backyard garden." – Dr. Davis [29:11]

5. Hormones, Muscle, and Aging Recovery

• Declining Testosterone & Strength: Modern men and women have far lower hormones and muscle mass, beginning in the 1980s due to dietary and environmental exposures ([36:50]).
• Microbiome-Hormone Link: Certain microbes, especially Lactobacillus reuteri, can naturally boost testosterone (300% in animal models), highlighting that restoring the right flora trumps hormonal replacement ([39:01]).

6. Cardiometabolic Health: Rethinking Cholesterol, Drugs, and True Risk

• Statins and Cholesterol Myths:
  • Statins, like GLP-1s, are termed a disastrous “dead end.” Cholesterol is a marker, not the cause of heart disease. The true drivers are small LDL and VLDL particles—created by processed carbs, grains, and sugars ([42:21]-[48:28]).
  • Statins have not reduced cardiovascular death rates meaningfully, but are highly profitable, distracting from true solutions ([42:21]-[45:16]).
• What To Measure Instead: Focus on small LDL and VLDL particles—not general cholesterol numbers. Address liver health, insulin resistance, and inflammation ([45:19]-[49:19]).
• How to Heal: Remove modern grains and sugars, replenish nutrients (vitamin D, magnesium, iodine, omega-3), and treat the gut. This reverses the real atherosclerotic processes ([49:19]-[51:19]).

7. The Great Fats Debate: What Oils to Eat

• Saturated Fat vs. Seed Oils: The best diet is one rich in minimally processed, naturally occurring fats from wild meats, fish, dairy, and plant sources like olive oil—mirroring traditional/pre-industrial human eating patterns. Ultra-processed seed oils (corn, soybean, cottonseed) are problematic due to overdose and imbalance with omega-3 ([51:19]-[54:33]). The key: eat real food, not manufactured oils.

8. Exercise, Overtraining, and Longevity

• Too Much Exercise Harms Health: Over-exercising, especially endurance sports, leads to muscle/bone loss, heart rhythm disorders, gut permeability, and even higher risk of degenerative diseases (Parkinson’s, etc.) ([55:02]-[57:17]).
• Exercise for Longevity: Move regularly, but train for life and sustainable strength, not for extremes or compulsion.

9. Dr. Davis' Top 5 Supplements for Heart & Overall Health ([58:24])

1. Vitamin D: Critical; dramatically improves outcomes for atherosclerosis and reduces heart risk. Do not supplement calcium—use food sources.
2. Omega-3 Fatty Acids: High-dose (over 3,300mg/day) EPA/DHA reverses arterial plaque; benefits worsen when trials use underdoses or ignore weight ([64:13]).
3. Iodine: Widespread deficiency reemerging. Essential for metabolic and thyroid health, especially after low-salt/fat-fearing decades ([67:11]).
4. Magnesium: Modern agriculture and water filtration strip this mineral from soil, food, and water. Supplementation is nearly always needed ([70:48]).
5. “SIBO Yogurt” Probiotic: Not commercial, but high-potency homemade with select strains targeting small intestine colonization and bacteriocin production ([72:17]).

10. Dr. Davis' New Book: “Super Body”

• Focuses on reversing muscle loss and visceral/ectopic fat, the most dangerous type. Shares natural strategies for rebuilding true health at the cellular level ([73:02]-[74:53]).
• Continues his crusade against the industry-driven, symptom-treating health establishment in favor of root-cause, lifestyle-driven healing.

Notable Quotes & Memorable Moments

• On Modern Wheat: “Buried in the foods that you have in your grocery store is a potent appetite stimulant… anything with the gliadin protein of wheat amplifies appetite, making us the unwitting consumers of more and more food.” – Dr. Davis [05:29]

• On GLP-1 Drugs: “She looks 20 years older… Of the 40 pounds she lost, 10 pounds is muscle… She regains… mostly fat. Her risk now, Josh, is greater than it was at the start.” – Dr. Davis [13:53]-[14:29]

• On Leaky Gut: “All it takes… one course… and you've killed hundreds of species. These species were doing good things for us… suppressing overproliferation of fecal microbes.” – Dr. Davis [22:45]

• On Microbiome Restoration: “If the solution was something that looks and smells like yogurt… what if we chose microbes that have been shown to colonize the small intestine… producing bacteriocins, antibiotics, natural antibiotics that kill fecal microbes?” – Dr. Davis [32:12]

• On Muscle & Longevity: “Just by aging, we lose a third of our muscle mass… How can we preserve muscle? Address the microbiome.” – Dr. Davis [19:32]

Useful Timestamps for Key Segments

• [03:41] Wheat’s transformation and appetite effects
• [06:15] Hybridization and carbohydrate changes in grains
• [12:45] Dangers of GLP-1 weight loss drugs
• [19:32] Ancestral eating, losing weight without muscle loss
• [22:04] Antibiotics and microbiome devastation
• [29:51] Rebuilding the microbiome: top 5 strategies
• [35:00] Making super-potent, homemade probiotic “yogurt”
• [39:01] Microbiome’s effect on testosterone
• [42:21] Statin drugs, cholesterol myths, and heart disease
• [49:19] Foundations for true cardiovascular healing
• [51:19] Good fats vs. bad fats in heart health
• [58:24] Top 5 heart-healthy supplements
• [73:02] Dr. Davis’ new book “Super Body”

Final Takeaways

• Chronic disease is not due to bad luck, genes, or a medication deficiency—it’s created (and reversed) by our daily food and lifestyle choices.
• Healing starts in the gut: restoring microbial diversity, avoiding unnecessary antibiotics, and using targeted probiotics are foundational.
• Popular drugs and surgeries for weight and heart disease cause long-term harm—natural, ancestral principles are safer and more effective.
• Focus on muscle preservation, minimal abdominal fat, and maximal microbial health for youthful energy, hormones, and resilience.
• True healing happens in your kitchen, not the pharmacy—using nutrient-dense food, practical supplementation, and DIY microbiome strategies.

For more on these radical, practical strategies, pick up Dr. William Davis’ latest book “Super Body” and explore Dr. Axe’s podcast archive.

This summary captures the key themes, memorable moments, and actionable advice from the episode. For anyone seeking to fix hormones, skin, or chronic health with science-backed natural methods, this episode is a must-listen!