Get the simple at-home test that will help you identify if yeast is the reason you're sick and tired. Plus, tired of being tired? Dr. Oz reveals a two-week plan that will fix your exhaustion for good!

View Part 2 of Is Yeast the Reason You're Exhausted?

View Part 3 of Is Yeast the Reason You're Exhausted?

Learn more about yeast overgrowth and exhaustion.

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.