Colleen talks about her husband's infidelity and all the pent-up anger she has inside. Find out what advice Dr. Oz has to give.

Click here to see Colleen’s first visit with Dr. Oz.

Click here to watch Part 1: Dr. Oz Challenges Colleen

Click here to watch Part 2: Colleen Re-Evaluates Her Life

Click here to watch Part 3: Colleen Opens Up About Her Marriage 

Click here to watch Part 5: Facing Up to Addiction & A New 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.