Gerard Mullin, MD


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Gerard E. Mullin, MD is a board-certified internist, gastroenterologist and nutritionist. He is an associate professor of medicine and serves as the director of Integrative GI Nutrition Services at The Johns Hopkins Hospital. Dr. Mullin has accrued over 20 years of clinical experience in the fields of integrative gastroenterology and nutrition and he earned a master’s degree in nutrition while in practice in 1994.

Dr. Mullin is regarded as an authority in integrative gastroenterology and was commissioned by Andrew Weil MD to edit Integrative Gastroenterology for his integrative medicine library for Oxford University Press ( Dr. Mullin teaches medical professionals at international conferences on the role of nutrition and lifestyle and the gut microbiome in digestive health and weight control.

He is the author of several professional desk reference and trade books ( including his latest The Gut Balance Revolution: Boost Your Metabolism, Restore Your Inner Ecology, and Lose the Weight for Good! (

Mullin’s academic biography is robust and has been included in Marquis Who’s Who in the World and in Marquis Who’s Who in America numerous times. His contributions and discoveries have led to multiple awards and his continued selection as one of America’s Top Physicians since 2004.

Dr. Mullin was the youngest person to receive an honorary membership from the American Dietetic Association (now The Academy of Nutrition and Dietetics) in 2009. He also received the Grace A. Goldsmith award presented by the American College of Nutrition in November 2011. This special award acknowledges a scientist who is under the age of 50 years, for significant achievements in the field of nutrition.

He is a founding member of the American Board of Integrative Medicine ( and serves on a number of nutrition exam committees and boards ( and was recently selected to serve as vice-chair for as medical practice section of the American Society for Parenteral and Enteral Nutrition ( Dr. Mullin also serves on the editorial board for numerous professional journals for gastroenterology, nutrition and integrative medicine.

Dr. Mullin has contributed to hundreds of consumer trade magazine articles who have featured his advice and professional journal papers dealing with digestive health, nutrition and wellness. He has been interviewed on radio and television and has contributed to stories in the Associated Press, ABC News, Good Morning America, Chicago Tribune, Newsday, Martha Stewart Living, O, the Oprah Magazine, Rodale Press, Consumers Digest, Reader’s Digest, Prevention, Natural Health magazine, More Magazine, Ladies Home Journal, Body & Soul, Cooking Light, Women’s World, Men’s Health, Good Housekeeping, Dr. Oz The Good Life Magazine, Glamour, and much more (

Visit Dr. Mullin’s website to learn more.