The National Runners' Health Study was started in 1991 by Dr. Paul T. Williams, a researcher in the Life Sciences Division at Lawrence Berkeley National Laboratory. To date, his research includes more than 120,000 runners and will span 20 years. Results from this study have been published in scientific journals, including the New England Journal of Medicine, Archives of Internal Medicine, American Journal of Clinical Nutrition, International Journal of Obesity, and the Journal of the American Geriatrics Society. The purpose of this study is to determine how much running is beneficial, whether running faster or further is better, whether diet or dietary supplements are helpful, and to assess injury rates. Dr. Williams is particularly interested in testing whether running helps prevent heart disease and cancer. To learn more about this study click on any of the links to the right.