Consumer Reports rates Jenny Craig as the top diet compared with five other commercial diets.

Consumer Reports compared the six diets -- Atkins, Jenny Craig, Ornish, Slim Fast, Weight Watchers, and the Zone -- using what it could find in scientific literature. It did not use direct research participants. Researchers looked at long- and short-term weight loss results, dropout rates and the nutritional qualities of the diets.

Consumer Reports is the magazine for Consumer Union, which is an independent, nonprofit consumer organization.

Here's why the folks at Consumer Reports gave Jenny Craig top marks: A 2010 study published in the Journal of the American Medical Association found that 92 percent of the participants stuck with Jenny Craig for two years. By the end of that period, the participants weighed on average of 8 percent less. This study was funded by Jenny Craig. Does this mean Jenny Craig will get you the best results? Not really. This means individual dieters should find a weight-loss plan that they will actually stick with, weight-loss experts say.

Jenny Craig integrates personalized counseling and portion-controlled prepackaged foods. A majority of dieters say that emotional support is critical to successful weight loss. Other programs such as Weight Watchers and the Ornish diet include some sort of counseling or group support.