Dr. Benjamin Bikman, PhD
Professor of cell biology at Brigham Young University
Insulin resistance is the hidden root of so much chronic disease, and food is the first lever. Author of Why We Get Sick.
Metabolism, nutrition, and longevity
Dr. Peter Attia, MD
Stanford-trained physician focused on prevention and longevity
In Outlive, he teaches how to train for your next 40 years and push back the "Four Horsemen": heart disease, cancer, neurodegenerative disease, and metabolic disease.
Dr. Jack Wolfson
Cardiologist known as the nation’s #1 natural heart doctor
A healthy heart, naturally, “without depending upon Big Pharma medications or surgeries.”
Dr. Casey Means, MD
Medical doctor trained as a surgeon, and author of Good Energy
Metabolic dysfunction is the key reason we develop symptoms and diseases. She left surgery to focus on keeping people out of the operating room.
Dr. Gabrielle Lyon
Founder of Muscle Centric Medicine and author of Forever Strong
Muscle and protein are the foundation of aging well: “Strength is not a luxury but a responsibility.”
Dave Asprey
Entrepreneur and author known as the Father of Biohacking
Biohacking is “the art and science of changing your internal and external environment to take full control of your biology.” Founder of Bulletproof and Upgrade Labs, and host of The Human Upgrade.
Dr. Aseem Malhotra
UK cardiologist
Heart disease is a chronic inflammatory condition, not saturated fat clogging the arteries, and healthy lifestyle changes effectively lower the risk.
Dr. Malcolm Kendrick
UK family doctor and author of The Great Cholesterol Con
LDL cholesterol is a weak predictor of heart disease; damage to the blood vessel lining, and the clots that form there, matter more.
Dr. Uffe Ravnskov, MD, PhD
Danish physician and independent researcher
Older adults with high LDL cholesterol live as long as, or longer than, those with low LDL, a direct challenge to the cholesterol hypothesis.
Dr. Paul Saladino, MD
Psychiatrist turned functional medicine physician
Author of The Carnivore Code, he moved from strict carnivore to an animal-based diet built on meat, organs, fruit, honey, and raw dairy.
Dr. Eric Berg, DC
Nutrition educator known for keto and intermittent fasting
His free guides turn research into food and daily habits, from diet strategies matched to different cancers to rebuilding muscle after menopause.
Dr. Valter Longo, PhD
USC Longevity Institute
Pioneer of the fasting-mimicking diet, designed to bring the benefits of fasting while still eating, and now tested alongside chemotherapy.
Dr. Jason Fung, MD
Toronto nephrologist and expert in intermittent fasting and low-carb diets
Author of The Obesity Code and The Complete Guide to Fasting: insulin, not calories alone, drives weight, and fasting is a powerful tool.
Dr. Rhonda Patrick, PhD
Biomedical scientist and founder of FoundMyFitness
Healthspan through biology: sleep, omega-3s, micronutrients, and “biological stressors such as heat, cold exposure, phytochemicals.”
Women’s hormones
Dr. Mindy Pelz, DC
Doctor of chiropractic and two-time New York Times bestselling author
In Fast Like a Girl and The Menopause Reset, she teaches women to “work with their biology, not against it.”
Dr. Lara Briden, ND
Naturopathic doctor with more than 25 years in women’s health
Your period is a vital sign: a regular cycle with real ovulation is a sign of overall health. Start with Period Repair Manual, or Hormone Repair Manual after 40.
Dr. Sara Szal (Gottfried), MD
Harvard-educated physician-scientist
Women’s hormones and metabolism can’t be separated. Start with Women, Food, and Hormones.
Dr. Jolene Brighten, ND
Board-certified naturopathic endocrinologist and certified menopause specialist
Many women start the pill young and never learn what their own cycle looks like. Start with Beyond the Pill.
Dr. Aviva Romm, MD
Yale-trained family physician, midwife, and herbalist
Hormone problems usually have roots outside the ovaries: stress, gut health, blood sugar, nutrition, and hormone-disrupting chemicals. Start with Hormone Intelligence.
Dr. Felice Gersh, MD
Dual board-certified in OB-GYN and integrative medicine
Estrogen does far more than run the reproductive system; it helps keep the body’s clock, metabolism, and gut in sync. Start with Menopause: 50 Things You Need to Know.
Dr. Mary Claire Haver, MD
OB-GYN
Author of The New Menopause. She helped bring updated hormone therapy research, and practical nutrition for midlife women, to millions.
Dr. Lisa Mosconi, PhD
Neuroscientist, Weill Cornell Medicine
Author of The Menopause Brain, on why brain fog, sleep, and mood change in this stage, and what supports the brain through it.
Dr. Stacy Sims, PhD
Exercise physiologist
Author of Next Level, on training and fueling through menopause: lift heavy, add impact, and eat enough protein.
Dr. Izabella Wentz, PharmD
Clinical pharmacist and New York Times bestselling author known as the Thyroid Pharmacist
Hashimoto’s can be addressed at the root with lifestyle, and iodine and selenium need to stay in balance.
Dr. Alan Christianson, NMD
Naturopathic physician and author of The Thyroid Reset Diet
For many people with Hashimoto’s or an underactive thyroid, lowering excess iodine helps the thyroid recover.
Dr. Anna Cabeca, DO, FACOG
Board-certified OB-GYN and integrative medicine physician, “The Girlfriend Doctor”
Helps women “before, during, and after menopause reclaim their vibrancy, sexuality, health and happiness.”
Dr. Datis Kharrazian, PhD, DHSc, DC
Associate clinical professor at Loma Linda University School of Medicine
Author of Why Do I Still Have Thyroid Symptoms When My Lab Tests Are Normal?, the first to describe treating thyroid dysfunction with an autoimmune approach.
Functional medicine, gut, and detox
Caroline Alan
Co-founder and CEO of BEAM Minerals, author of The Mineral Reset
Minerals are the foundation of cellular life, and many everyday struggles, from low energy to poor sleep and cravings, trace back to a mineral shortfall she calls a “hidden hunger.”
Dr. Terry Wahls, MD
Clinical professor of medicine at the University of Iowa, living with MS
After four years in a tilt-recline wheelchair with progressive MS, she returned to walking and biking by redesigning her diet and lifestyle. Author of The Wahls Protocol, she now runs clinical trials of her approach.
Dr. Alessio Fasano, MD
Pediatric gastroenterologist and researcher, Mass General and Harvard
His team discovered zonulin, a protein that loosens the gut barrier, and his research helped show how a leaky gut can open the door to autoimmunity.
Dr. Sarah Ballantyne, PhD
Medical biophysicist
Author of The Paleo Approach, the foundational book on the Autoimmune Protocol (AIP), and a leading voice on nutrient density for autoimmune health.
Dr. Mark Hyman, MD
Founder of the Cleveland Clinic Center for Functional Medicine
Treat the system, not the symptom. Author of more than a dozen New York Times bestsellers, including Young Forever.
Dr. Daniel Pompa
Cellular health educator, author of Beyond Fasting and The Cellular Healing Diet
Detox starts at the cell, and his 5 R’s give a clear order for doing it safely.
Martha Carlin
Citizen scientist, founder of The BioCollective, and leader of BiotiQuest
Whole-body health starts in the gut, including the connection between the gut and the brain.
Dr. Joseph Mercola, DO
Osteopathic physician, New York Times bestselling author, and founder of Mercola.com
One of the most-read voices in natural health, teaching root-cause, nutrition-first care, including oxidative therapies like nebulized peroxide and natural antimicrobials like colloidal silver.
Dr. David Brownstein, MD
Board-certified family physician and medical director of the Center for Holistic Medicine in Michigan
Known for his work on iodine and on nutritional and oxidative therapies, including a published case series of 107 patients with COVID-19.
Dr. David Jockers, DNM, DC
Doctor of natural medicine known for his work in functional nutrition
Support the body early and naturally, including nebulizing at the first sign of a respiratory infection.
Dr. Peter McCullough, MD, MPH
Internist and cardiologist
Lingering spike protein can be a treatment target. His base spike detox pairs natural enzymes, nattokinase and bromelain, with curcumin.
Dr. Amy Myers, MD
Functional medicine physician and two-time New York Times bestselling author
Gut health is the root of autoimmunity, and hidden infections like parasites are often missed.
Ann Louise Gittleman, PhD, CNS
Nutritionist and author of Guess What Came to Dinner? Parasites and Your Health
Parasites are a missing diagnosis behind many chronic symptoms, and a clean, parasite-resistant diet is the first defense.
Dr. Tom O’Bryan
A world expert on gluten and its impact on health; Institute for Functional Medicine faculty
Author of The Autoimmune Fix: why the immune system turns on the body, and how gluten and leaky gut feed it, often years before symptoms.
Dr. Will Cole, IFMCP, DNM, DC
Functional medicine practitioner and New York Times bestselling author
Author of The Inflammation Spectrum and Gut Feelings: root causes first, with food, herbs, stress care, and lifestyle.
Dr. Natasha Campbell-McBride
Founder of the GAPS diet
GAPS stands for Gut And Psychology Syndrome: her approach connects the health of the gut with the mind and body.
Dr. Zach Bush, MD
Physician focused on the microbiome and soil health
“Health was never something we possessed. It was always something we participated in.”
Dr. Elisa Song, MD
Integrative pediatrician and pediatric functional medicine expert
Raising resilient kids one microbiome at a time, so parents “feel confident integrating both conventional and natural treatments.”
Dr. Ben Lynch, ND
Naturopathic doctor and author of Dirty Genes
Your genes aren’t your destiny: diet, supplements, and lifestyle support methylation and the genes behind detox.
Chris Kresser, M.S., L.Ac.
Functional Medicine clinician and educator; co-founder of the California Center for Functional Medicine
Author of The Paleo Cure and Unconventional Medicine: real, nutrient-dense food, grass-fed meat, and as little ultra-processed food as possible.
Cancer and the terrain
Dr. Pete Sulack, DC
Grade 4 brain cancer survivor
Diagnosed in 2024, he reports no evidence of cancer, using five pillars: a personalized diet, strategic supplements, detoxification, oxygenation, and faith.
Dr. Nasha Winters, ND, FABNO
Naturopathic oncologist and survivor
In The Metabolic Approach to Cancer, her Terrain Ten maps the body’s terrain, with a nutrition approach for each part.
Dr. Kelly Turner, PhD
Researcher, Radical Remission
Studied more than 1,500 unexpected remissions and found ten factors survivors shared, from changing their diet to having strong reasons for living.
Dr. Thomas Levy
Physician board-certified in internal medicine and cardiology, author of Curing the Incurable and Rapid Virus Recovery
Among the best-known advocates of high-dose vitamin C and oxidative therapies; these are his views, and our articles share the research alongside them.
Dr. Lise Alschuler, ND, FABNO
Naturopathic oncologist and professor of clinical medicine at the University of Arizona
Envisions “a world where all individuals with disease are offered personalized integrative care.” Co-author of Definitive Guide to Cancer.
Dr. Thomas Seyfried, PhD
Biology professor at Boston College
Cancer as a metabolic disease: “impaired cellular energy metabolism is the defining characteristic of nearly all cancers,” which opens the door to metabolic approaches.
Skin
Dr. Ben Johnson, MD
Physician and founder of Osmosis Beauty
Healthy skin starts within: a holistic, root-cause approach to skin, from the inside out.
Brain, mind, and body
Dr. Andrew Huberman, PhD
Neuroscientist and tenured professor at Stanford University School of Medicine
Translates science into practical protocols for sleep, light and circadian rhythm, stress, mood, and energy.
Dr. David Perlmutter, MD
Board-certified neurologist and author of Grain Brain
“Food and metabolic health are foundational to brain function,” and your brain health is within your control.
Dr. Bruce Lipton, PhD
Cell biologist and author of The Biology of Belief
The environment, through the cell membrane, turns genes on and off: “The moment you change your perception is the moment you rewrite the chemistry of your body.”
Dr. Dale Bredesen, MD
Neuroscientist, UCLA, and creator of the ReCODE program
Cognitive decline has many contributors, so his ReCODE program targets each person’s own risk factors, from blood sugar and inflammation to vitamin D, with diet, lifestyle, and personalized care.
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