People who are lonely and depressed are three to 10 times more likely to get sick and die prematurely than those who have a strong sense of love and community. I don't know any other single factor that affects our health - for better and for worse - to such a strong degree.
- Dean Ornish, physician, researcher, bestselling author, professor, and founder and president of the nonprofit, Preventive Medicine Research Institute. He is well known for his promotion of healthy diets and lifestyle changes to control coronary artery disease and other chronic diseases. (1953- )