Michael Greger

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Michael Greger
Education Cornell University College of Agriculture and Life Sciences
Tufts University School of Medicine
Medical career
Profession General Practitioner and Director of Public Health and Animal Agriculture at the Humane Society of the United States
Field Clinical Nutrition
Specialism Veganism/Vegetarianism
Research Public health threats from industrial agriculture
Notable works The Colbert Report, The Dr. Oz Show, and giving testimony before Congress regarding the Oprah Winfrey "meat defamation trial"
Greger in 2007

Michael Greger is an American physician, author, and professional speaker on public health issues. He is a graduate of the Cornell University School of Agriculture and the Tufts University School of Medicine. He started eating a plant-based diet in 1990. He is currently the Director of Public Health and Animal Agriculture at the Humane Society of the United States (HSUS) and Humane Society International. Greger is the author of numerous books and scholarly publications on animal agriculture, nutrition, and human health. In 2011, he founded the website NutritionFacts.org.

Career advocacy[edit]

Greger is licensed as a general practitioner specializing in clinical nutrition. His work includes the human health implications of intensive animal agriculture and involves examining the routine use of non-therapeutic antibiotics and growth hormones in animals raised for food, and the public health threats of industrial factory farms.[see publications] Greger contributes to the HSUS's efforts to shape public policy on agriculture and nutrition.[1]

He also works on food safety issues, such as bovine spongiform encephalopathy (mad cow disease). He appeared as an expert witness testifying about mad-cow disease when cattle producers sued Oprah Winfrey for libel.[2]

Greger has lectured at universities, medical schools, and conferences,[see lecture list] including the Conference of World Affairs, the National Institutes of Health, and the International Bird Flu Summit. He has testified before Congress and appeared on shows such as The Colbert Report and The Dr. Oz Show.

NutritionFacts.org is a 501c3 nonprofit charity, for which Greger summarizes research from scientific journals in short referenced videos. It was established by Greger with help from the Jesse and Julie Rasch Foundation. [3]


He wrote the book Bird Flu: A Virus of Our Own Hatching, which is still in print and is also available free online. The book received a favorable review in the Journal of Clinical Investigation[4] and a mixed but generally favorable one in Nature. He also wrote Carbophobia: The Scary Truth Behind America's Low Carb Craze (2005) and Heart Failure: Diary of a Third-Year Medical Student (2000). In 2015, he co-wrote How Not To Die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease with Gene Stone.

See also[edit]


  1. ^ "Humane Nutrition Presentations : The Humane Society of the United States". www.humanesociety.org. Retrieved 2015-09-10. 
  2. ^ Reda, Bonnie Reda (28 February 2004). "Expert to dissect 'mad cow' disease in presentation". Rochester Democrat and Chronicle (Rochester, NY). p. B.3. Retrieved 26 January 2011. 
  3. ^ Voices of the Food Revolution: Healing Your Body and Your World With Food!, John Robbins and Ocean Robbins, San Francisco: Conari Press, 2013, p. 67
  4. ^ Pekosz, Andrew (Sep 4, 2007). "Book Review. Bird flu: A virus of our own hatching". J Clin Invest 117 (9): 2350–2350. doi:10.1172/JCI33078. Retrieved 17 August 2014. 

External links[edit]