Could you be suffering from a gluten allergy and not know it? Dr. Oz sits down with Dr. Neal Barnard to discuss why gluten can be harmful to your health. Learn why going gluten-free could help your health, and how to do it the right way! In this sneak peek Dr. Oz explains what gluten is and where it can be found.

You've heard of red wine and white wine but have you ever heard of blue wine? This blue version of wine is given a taste test to see how it compares to the classics.