http://win.niddk.nih.gov/publications/PDFs/teenblackwhite3.pdf

A practical guide to healthy eating and physical activity for teenagers, from the Weight-control Information Network. The Weight-control Information Network (WIN) is a national information service of the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) of the National Institutes of Health, which is the Federal Government's lead agency responsible for biomedical research on nutrition and obesity.