Our social experiment puts unsuspecting people to the test. Would you stop a child from stealing? Would you help a friend ditch her diet for a day? See what our hidden cameras uncovered when people get real. Then, was a bipolar patient shot because he’s black? Montel Williams fights back and calls out injustice.

Want to help lower your risk of getting cancer? The answer could be in the food you eat! Dr. John Whyte, chief medical officer at WebMD and the author of "Take Control of Your Cancer Risk," says there are three kinds of foods that could really help prevent cancer: garlic, fish and grapes. And what three kinds of foods should you avoid? Red and processed meats, refined grains, and alcoholic and sugary drinks. Watch the videos below to learn more about how food could be connected to your cancer risk.

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