You think diet ice cream and frozen yogurt are healthy, but are they making you fat? We investigate the ingredients that may cause you to pack on the pounds. Then, the 28-day challenge to shrink your stomach — see the meals you should be eating to be beach-ready in less than a month.

Dr. Oz goes where he's never gone before. He's letting you eat fast-food and it's not what you expect. Learn which fast food meals you can eat under 500 calories while still enjoying the food you love.

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