Lawrence Friedman, M.D., is a professor of medicine at Harvard Medical School and Tufts University School of Medicine, the Anton R. Fried, M.D., chair of the department of medicine at Newton-Wellesley Hospital, and assistant chief of medicine at Massachusetts General Hospital. He is the medical editor of The Sensitive Gut, a special health report from Harvard Medical School.
The 'second brain' in your stomach can cause or relieve illness and stress. Here's how it works.
Long-term survivors of HIV/AIDS reflect on what they've witnessed and endured
A series on America's first generation aging with HIV/AIDS