Certifies personal trainers and educates the public on fitness safety and effectiveness. Site includes articles and a directory of ACE-certified health clubs and fitness professionals.

Leading organization of professional dietitians.  Its Journal of the American Dietetic Association sets the standard for scientific journals in its field.  Site includes a directory of ADA-member dietitians and numerous free other resources.

Top research, advocacy, and education organization in its field. Site includes tips for healthy living and a voluminous Heart & Stroke Encyclopedia, as well as advice on helping to raise funds for heart research and to lobby for public policy supporting heart health.

"A fun, free, and flexible physical activity program developed for women" by the American Heart Association. The program "lasts 12 weeks and is designed to help participants gradually increase their physical activity levels to 30 minutes on most days of the week -- a level shown to reduce the risk of heart disease and stroke. Each week, participants receive information, tips and activities to complete. Besides helping women to establish physical activity as a habit, Choose To Move also offers information on healthy eating and weight management."

An online book of tips for improving your diet, from the American Heart Association. Includes a "Rate Your Diet" quiz and other tools.

Links to reliable diabetes resources from the U.S. federal Centers for Disease Control

A free guide to reliable consumer health and human services information, developed by the U.S. Department of Health and Human Services.  Site offers links to hundreds of trustworthy resources. (Last reviewed 6/28/03.) Nonprofit.