U.S. News & World Report had experts evaluate and rank about 20 different diets, including popular commercial diet plans.
- Weight Watchers came out at the top of the list for best commercial diet. Experts say the diet is safe, nutritious and easy to follow.
- Jenny Craig came in at a close second, but experts were concerned about its cost and if dieters would be able to maintain their weight loss.
- Slim Fast came in third, with Nutrisystem and South Beach rounding out the top five.
If you're looking for an overall diet, the experts say the National Institute of Health's (NIH) DASH diet is the best. The diet was designed to fight high blood pressure but the panel says it's nutritious, can prevent or control diabetes and supports heart health.
The Mediterranean diet came in second. And another NIH diet called the TLC diet rounded out the top three.