Michael F. Jacobson, Ph.D., is co-founder and executive director of the Center for Science in the Public Interest (CSPI), a nonprofit health advocacy organization supported largely by the 900,000 subscribers to its Nutrition Action Healthletter. CSPI is a key player in battles against obesity, cardiovascular disease, and other health problems, using such tactics as education to legislation to litigation. Jacobson has written numerous books and reports, including Nutrition Scoreboard, Six Arguments for a Greener Diet, Salt: the Forgotten Killer, and Liquid Candy: How Soft Drinks are Harming Americans' Health.