Michael Greger, MD

"Physician and NutritionFacts.org founder who turns thousands of clinical studies into practical advice."

Michael Greger, MD, is a physician, author, and founder of NutritionFacts.org, a non-profit that distills nutrition science research into free videos and articles for the public. A New York Times bestselling author of How Not to Die, Greger has testified before the U.S. Congress, presented to numerous medical conferences, and served as an expert witness in food-safety litigation. His work is built on systematically reviewing published clinical research — How Not to Diet alone cites more than 4,000 studies — to translate evidence-based nutrition science into practical, everyday recommendations for the general public.

{"books_reviewed": 1, "years_active": "2006-present", "primary_focus": "Nutrition science & evidence-based health"}

Books by Michael Greger, MD

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Key Ideas & Recurring Themes

Caloric Density

How many calories are packed into a given volume or weight of food — lower-density foods let you eat more and feel fuller for fewer calories.

The Weight Loss Multiplier

A ranking of 21 specific foods and habits by their evidence-based impact on fat loss.

AMPK Activation

The body's metabolic "master switch," activated by factors like vinegar, exercise, and fasting.

Notable Quotes

"Obesity will reduce our life expectancy by 2 to 5 years. To put that into perspective, a miracle cure for all forms of cancer would only add three and a half years to the average American life span."
— How Not to Diet
"More than 97 percent of Americans get enough protein, but more than 97 percent of Americans don't get enough fiber."
— How Not to Diet

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Book Author Michael Greger, MD

How Not to Diet Summary and Review

How Not to Diet summary and review featured image

★★★★☆ 4.4/5 — A meticulously researched case that sustainable weight loss comes from exploiting your body’s own physiology with specific, evidence-backed foods and habits, not willpower alone. Best for: readers who want a rigorously cited, whole-food approach to weight loss…