The Center for Science in the Public Interest (CSPI) is a non-profit health-advocacy group based in Washington, DC, that focuses on protecting the public from diet-related health problems.  CSPI publishes Nutrition Action Healthletter, the nation’s largest‑circulation health newsletter, and has led efforts that resulted in healthier diets, more-nutritious school foods, safer foods, and more honest food labeling.  CSPI provides objective information to the public and represents citizens’ interests before legislative, regulatory, and judicial bodies.  CSPI is supported largely by subscribers to Nutrition Action Healthletter, individual donors, and foundation grants.