JoAnn Manson M.D., Dr.P.H.

JoAnn Manson

JoAnn E. Manson is chief of the division of preventive medicine at Brigham and Women’s Hospital and the Michael and Lee Bell Professor of Women’s Health at Harvard Medical School. She is an endocrinologist, epidemiologist, and expert in preventive medicine. She leads several major research studies addressing prevention of heart disease, diabetes, and cancer, including the VITamin D and OmegA-3 TriaL (VITAL;, the Women’s Health Initiative Clinical Center in Boston, the Women’s Antioxidant and Folic Acid Cardiovascular Study, the cardiovascular component of the Nurses’ Health Study, and the KEEPS center in Boston.

Her primary research interests include the role of lifestyle and nutritional factors, particularly vitamin D, omega-3s, and folate, in the prevention of chronic disease, the effects of moderate-intensity vs. vigorous exercise, and the risks and benefits of estrogen therapy. Manson has received numerous awards and honors, including being named one of ten Heroes in Women’s Health by American Health for Women magazine in 1997, the “Woman in Science” Award from the American Medical Women’s Association in 2003, the AHA’s Population Research Prize in 2010 and Distinguished Scientist Award in 2011, and she serves as president of the North American Menopause Society (NAMS). She has published more than 700 articles in the medical literature and is the author of 11 books, including The 30-Minute Fitness Solution (2001) and Hot Flashes, Hormones, & Your Health (2007).

See all Best Diets Experts

Best Diets Rankings

Best Diets Overall
Diets ranked by across-the-board effectiveness.

Best Weight-Loss Diets
Diets ranked by effectiveness for both quick and lasting weight loss.

Best Diabetes Diets
Diets that can prevent diabetes or help diabetics.

Best Heart-Healthy Diets
Diets that lower cholesterol, blood pressure or triglycerides.

Best Diets for Healthy Eating
Diets ranked by how safe and nutritionally complete they are.

Best Commercial Diet Plans
Brand-name diets ranked by overall effectiveness.

Easiest Diets to Follow
Diets ranked on whether they're a snap to stick to.

Best Plant-Based Diets
Plant-based diets ranked by overall effectiveness.