Weight loss programs: Atkins Diet, eDiets

About 67 percent of U.S. adults age 20 or older are overweight or obese, according to the National Center for Health Statistics. So many bulging waistlines means quite a market for creators of diet plans. This is the third in a series from Consumer Reports evaluating diets. 

Atkins Diet

This well-known, high-protein, low-carb diet was first described in the book "Dr. Atkins' Diet Revolution" (Bantam, 1981). The diet is based on the concept that by eating fewer carb-containing foods and instead predominantly consuming protein plus vegetables with lots of fiber, your body burns fat rather than carbs as its main source of fuel. The first phase of the program mostly bans carbs, though restrictions lessen later. ("The New Atkins for a New You: The Ultimate Diet for Shedding Weight and Feeling Great," published in March, adds the latest information about the Atkins diet, such as a new requirement of at least five servings of high-fiber vegetables and advice about how to get rid of symptoms that may occur when switching to a low-carb diet.)

Studies show: Long-term adherence to the Atkins diet is below average because some people find its requirements too restrictive, according to Consumer Reports. Weight loss over the long term is average, and it earned Consumer Reports' poorest rating for nutrition analysis.

eDiets

An online service, eDiets was started in 1998. The program, which includes home delivery of meals, snacks and desserts, offers 20 diet plans, and the website offers access to menus, recipes, support groups, and diet experts.

Studies show: The plan earned average marks from Consumer Reports, and weight loss was found to be below average. The plan got high marks in nutrition analysis.