http://www.nhlbi.nih.gov/guidelines/obesity/e_txtbk/
National Heart, Lung, and Blood Institute, National Institutes of Health
This electronic textbook allows easy access to information contained in The Clinical Guidelines on the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults: The Evidence Report, produced by the National Heart, Lung, and Blood Institute in cooperation with the National Institute of Diabetes and Digestive and Kidney Diseases. Topics addressed in the Clinical Guidelines include the health risks associated with overweight and obesity, as well as the assessment, treatment, and management of overweight and obese patients. You can read from chapter to chapter or quickly find a particular area of interest by using the Search engine.