A small new study shows that successful dieters had an abundance of a bacteria called Phascolarctobacterium, whereas another bacteria, Dialister, was associated with a failure to lose weight. sorbetto/Getty Images hide caption
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Yo-Yo Dieting May Pose Serious Risks For Heart Patients
An increasing number of overweight Americans have lost the motivation to diet. enisaksoy/Getty Images hide caption
Is Dieting Passe? Study Finds Fewer Overweight People Try To Lose Weight
Which eating plan will work with your lifestyle and help you lose weight? U.S.News & World Report has plenty of advice with its latest diet rankings. Maximilian Stock Ltd./Getty Images hide caption
In her new book, neuroscientist Sandra Aamodt tackles why traditional diets don't work for many people, and often leave the dieter worse off than before. PM Images/Getty Images hide caption
Oprah Winfrey arrives at the 87th Academy Awards nominees luncheon at the Beverly Hilton Hotel on Monday, Feb. 2, 2015, in Beverly Hills, Calif. Jordan Strauss/Invision/AP hide caption
Sure, seeing a cockroach on your fries would turn you off eating them. But what about seeing a photo of a cockroach flash by before you see a photo of fries? Flickr hide caption
A meta-analysis found that people on vegetarian diets lost around 4.4 pounds more than the control group (who had no change in diet), while those who went vegan dropped 5.5 pounds more. Marcus Butt/Ikon Images/Corbis hide caption
Psychologist Traci Mann calls willpower "a mythical quality and certainly not something that can be relied upon for weight loss." Meredith Rizzo/NPR hide caption
The Mediterranean-like DASH and the plant-centric Ornish eating plan topped this year's rankings of diets by a panel assembled by U.S. News & World Report. Gillian Blease/Getty Images/Ikon Images hide caption
Indulge or resist? Sugar cravings can be a serious challenge. iStock hide caption
A Beef Merlot dinner from the Atkins frozen food line, launched in January. Kent Altena/Flickr hide caption
The 7-Day Color Diet: An attempt to get people to eat more fruits and vegetables, this diet requires followers to eat foods of just a single color each day. It ends with a day in which you "eat the rainbow," so to speak. Here's Gonot's cheeky take on orange day. Stephanie Gonot/Courtesy of the photographer hide caption
Women in a recent study who were trying to diet ate about 60 percent less chocolate after smelling oranges. GrenouilleFilms/iStockphoto.com hide caption
Front-loading your calories may help you lose weight. Gaelle Cohen/iStockphoto.com hide caption