Could a hidden food allergy be making you fat? Dr. Oz reveals the different types of food allergies and shows you how even the healthiest foods can cause negative bodily reactions. Learn how you can use the principles of the elimination diet to diagnose your food allergies and shed those unwanted pounds.

We've all been there — we get a cramp in our stomach, maybe with some nausea or constipation. It's easy to think it may just be indigestion. But what if it's something more serious like diverticulitis? That's a condition of inflammation or infection in one or more small pouches that can form in your digestive tract. Here's how to tell the difference between the pain and how to know when you should see a doctor.

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