The American Heart Association recommends eating just one teaspoon of salt a day, but one scientist claims that having more salt in your diet is actually healthier. We investigate. Plus, with serious questions about mercury levels, we decode which canned tuna to buy for both health and flavor.

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.