Center for Science in the Public Interest (CSPI)
CSPI is a nonprofit education and advocacy organization that focuses on improving the safety and nutritional quality of food. Their Web site offers information on food additives, substitutes and advice on improving you and your children’s diet. CSPI is the publisher of Nutrition Action Healthletter.

The National Center for Complementary and Alternative Medicine
The National Center for Complementary and Alternative Medicine (NCCAM) at the National Institutes of Health (NIH) is dedicated to exploring complementary and alternative healing practices in the context of rigorous science; training CAM researchers; and disseminating authoritative information.