If you think your hair straighteners and relaxers are 100% safe, think again. Before you head to your local salon, see what Dr. Oz uncovered in his investigation. Plus, tips to survive everyday emergencies with the ultimate survivor, Jeff Probst.

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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