One-time Oprah chef Art Smith reveals how he lost weight - despite spending his days in the kitchen. Here, Smith explains the diet he followed to achieve better health and shares his favorite weight-loss recipe: a whole-wheat margherita pizza. Click here to get the recipe.

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.