When it comes to potato chips, you know it's almost impossible to eat just one – but did you know that was by design? Dr. Oz breaks down how potato chips are carefully calibrated to appeal to the pleasure centers of your brain.

Watch Dr. Oz talk to the reporter who uncovered the food industry's secrets.

Read more about how the food industry is fueling your junk-food addiction.

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.