Here is the ranking from the U.S. News World Report. Please note that the last three tied for 3rd place.
1. DASH Diet (4.1 stars) -- The blood-pressure-lowering diet beat out other better-known diets for its nutritional completeness, safety, ability to prevent and control diabetes, and promote heart health.
2. TLC Diet (4.0 stars) -- The National Institutes of Health created the Therapeutic Lifestyle Changes diet to lower cholesterol levels. Experts say it’s a well-rounded, healthy diet, but it requires a “do-it-yourself” approach as opposed to the hand-holding provided by some commercial diet plans.
3. Mayo Clinic Diet (3.9 stars) -- This diet plan got high marks for its safety and nutrition. Experts say it is moderately effective for weight loss.
3. Mediterranean Diet (3.9 stars) -- With an emphasis on fruits, vegetables, olive oil, and other healthy foods, the diet got some of the highest scores for nutrition. But experts say some Americans might have a problem sticking to a diet that requires giving up processed foods and sugary drinks.
3. Weight Watchers (3.9 stars) -- Experts said the commercial weight loss diet plan was the easiest to stick to thanks to a strong emphasis on emotional support.