Dr. Oz

Celebrities have a well-manicured finger on the pulse of what's trendy, which is why we were surprised to hear that many stars are trading in their fruit-juice fasts and cleanses for old-school diet foods: grapefruit, cottage cheese, rice cakes—stuff your mom nibbled on before darting off to Jazzercise.[sidebar]Case in point: Jessica Simpson and Lauren Conrad are grapefruit fans. To prevent their thighs from developing a curd-like texture, Samantha Harris and Bachelorette star Ashley Hebert crack open the cottage cheese. And Jennifer Hudson, the poster girl for successful dieting, snacks on popcorn.This shift is not lost on experts, who say there's not only a trend toward retro weight-loss methods, but new research to back up the slimming benefits of many of these foods.What's old is new again Interestingly, millennials—who were born in the 1980s and '90s and thus were not even alive when these foods dominated the diet world in the '60s and '70s—are driving this movement back to the ba...

Read More ›