Dr. Oz checks in on the participants of his first national challenge, 10 Years Younger in 60 Days. The Biggest Loser's Bob Harper is putting the residents of Kansas City, KS and Kansas City, MO to the test: a city-wide scavenger hunt to locate the nutritional items helping to turn back the clock. Click here to join the 10 Years Younger in 60 Days Challenge!

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.