Functional Medicine

Mark Hyman, MD

67% Trust Score
762 claims analyzed
5.9 followers
67 verified · 26 questionable · 7 debunked

Is Mark Hyman, MD trustworthy?

Mark Hyman, MD has a Verify Influencers Trust Score of 67 out of 100, which we classify as mixed. Of the 762 health claims we analyzed, 67 are verified by peer-reviewed research, 26 are questionable, and 7 are debunked.

Why this score

Mark Hyman, MD, is a practicing family physician and internationally recognized leader, speaker, educator, and advocate in Functional Medicine, with over 30 years of experience. He is the founder and director of The UltraWellness Center, founder of Cleveland Clinic's Center for Functional Medicine, co-founder and Chief Medical Officer of Function Health, and a fifteen-time New York Times bestselling author. His primary focus areas include tackling root causes of chronic diseases through nutrition, lifestyle medicine, and reforming the broken food and health systems via policy advocacy like the Food Fix Campaign.

Mark Hyman, MD's most repeated claims

Verified (67/100) — Take 25 mg of Vitamin B3 (Niacin) per day for optimal intake (Supplements) source
Verified (84/100) — Take 400 to 500 mg of magnesium daily (Supplements) source
Verified (82/100) — Reduce chronic inflammation: supplements Omega-3s, curcumin, magnesium (Supplements) source
Verified (74/100) — 90% of Americans are deficient in one or more nutrients; recommend high-quality high-potency complete multivitamin, Vitamin D3, Omega-3 Fatty Acids (EPA and DHA), Magnesium (Supplements) source
Verified (83/100) — Nutrient deficiencies in omega-3s, magnesium, B vitamins, zinc, iron, vitamin D impair mitochondrial function and energy. (Nutrition) source
Questionable (46/100) — 90% of Americans deficient in key nutrients like omega-3s, vitamin D, magnesium, zinc, iron, folate. (Supplements) source
Debunked (28/100) — Add 1–2 cups of Epsom salts (magnesium sulfate) to bath before bed (supplements) source
Verified (93/100) — Vegan pregnancy: supplement Vitamin B12 (essential), iron with vitamin C, algae-based Omega-3 DHA, iodine (Supplements) source
Verified (68/100) — Take 200 – 400 mg of magnesium citrate or glycinate before bed (supplements) source
Verified (67/100) — Take Magnesium glycinate 3/day (taken at night) aiming for ~400 mg (supplements) source

Verified claims

Verified (67/100) — Take 25 mg of Vitamin B3 (Niacin) per day for optimal intake (Supplements) source
Verified (84/100) — Take 400 to 500 mg of magnesium daily (Supplements) source
Verified (82/100) — Reduce chronic inflammation: supplements Omega-3s, curcumin, magnesium (Supplements) source
Verified (74/100) — 90% of Americans are deficient in one or more nutrients; recommend high-quality high-potency complete multivitamin, Vitamin D3, Omega-3 Fatty Acids (EPA and DHA), Magnesium (Supplements) source
Verified (83/100) — Nutrient deficiencies in omega-3s, magnesium, B vitamins, zinc, iron, vitamin D impair mitochondrial function and energy. (Nutrition) source

Debunked claims

Debunked (28/100) — Add 1–2 cups of Epsom salts (magnesium sulfate) to bath before bed (supplements) source
Debunked (28/100) — Everyone needs multivitamin, fish oil, vitamin D, and probiotics because modern life, diet, and antibiotics damage gut ecosystem (Supplements) source
Debunked (27/100) — Gut cleanse with cilantro juice and fiber upregulates detox pathways. (Nutrition) source
Debunked (28/100) — Take 400 IU of mixed tocopherols Vitamin E per day for optimal intake (Supplements) source
Debunked (24/100) — Seed oils are problematic due to high omega-6, processing, and oxidation; prefer olive oil, butter, avocados. (Nutrition) source

Products Mark Hyman, MD promotes

Metagenics - OmegaGenics EPA-DHA 720 - 120 ct. — 88/100
V Clear EPs 7630® Syrup — 88/100
PlusOne Daily Prenatal Pack — 87/100
Function Health - Annual Membership — 87/100
Klaire Labs - MultiThera 1 Capsule Formula (Plus K) — 86/100
Mark Hyman - Eat Fat, Get Thin Book — 86/100
Pure Encapsulations - Vitamin D3 5000 IU — 86/100
Pure Encapsulations - O.N.E. Omega 60 ct. — 86/100
Pure Encapsulations - Magnesium (Citrate) 150mg — 85/100
Dr. Hyman - Foundational Nutritional Support Stack — 85/100
Homocysteine Supreme 120 ct — 85/100
Pure Encapsulations - Buffered Ascorbic Acid Capsules - 90 count — 85/100

Frequently asked questions

What is Mark Hyman, MD's trust score?: Mark Hyman, MD has a Verify Influencers trust score of 67 out of 100, based on analysis of 762 health claims against peer-reviewed scientific research.
Is Mark Hyman, MD trustworthy for health advice?: Mark Hyman, MD has a Verify Influencers Trust Score of 67 out of 100, which we classify as mixed. Of the 762 health claims we analyzed, 67 are verified by peer-reviewed research, 26 are questionable, and 7 are debunked.
How many claims has Mark Hyman, MD made?: We have analyzed 762 health claims from Mark Hyman, MD across YouTube, social media, podcasts, and their website.

Scores follow a fixed rubric and are re-checked on a rolling cycle. How we score and how to request a correction. Last updated 2026-05-16.

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