Heidi's Klum's catchphrase -- "One day you're in, and the next day you're out" -- applies as much to food as it does fashion. Over the years, we've all had favorite eats hit the healthy-food blacklist, but thankfully, some of them are making a return. In fact, recent research has not only redeemed once-taboo foods such as steak, eggs (yolks included), and peanut butter but also found that when eaten in moderation, some of them may actually help you conquer the scale.
Guilt-Free Fast Food
EGGS
Then: Yolks were considered tiny cholesterol bombs.
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Now: Numerous studies, including one in a 2011 issue of the European Journal of Clinical Nutrition, have debunked the link between eggs and heart disease. Although a single yolk contains nearly the recommended daily limit for dietary cholesterol, it is the most nutrient-rich part, packed with zinc, iron, vitamins A and D, and choline, which may help reduce breast-cancer risk. Plus, the yolk contains nearly half of an egg's hunger-quashing protein, which is why white-only omelets aren't as satisfying.
"Because you feel full, you're less likely to overeat later on," says Nikhil V. Dhurandhar, Ph.D., an associate professor at Pennington Biomedical Research Center in Baton Rouge, Louisiana.
Bring it back: A hardboiled egg makes a great snack with staying power -- and has only around 70 calories. Just beware fattening companions that often accompany eggs, such as butter, bacon, and cheese.
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