Knoxville (WVLT) - At any one time, as many as half of all Americans are on a diet.
But how do you know if your plan will give you the results you are looking for?
In Consumer Reports' June issue health editors rate some of the most popular diet plans.
Jenny Craig and Slim Fast rank 3 and 4 respectively, because some say they are hard to stick to long term.
Weight Watchers comes in at number two, mainly because the level of emotional support participants receive.
The Volu-Metrics eating plan came in at number one. Essentially people eat a lot of low calorie food to take the edge off their appetites.