Zero calorie foods--can you really eat as much as you want guilt-free? Do they really help you lose weight? We break it all down. Plus, Leah Remini on her 80 pound weight loss and the Scientology scandal. What chef Nigella Lawson eats to feel good, and new dinner side dishes when you’re out of ideas.

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.