How can intestinal bacteria affect your weight?

You have trillions of bacteria living in your intestines. Most of them are beneficial bugs, breaking down food and helping you absorb nutrients. Michael Roizen, MD, explains the wrong mix of gut bacteria could be making you fat.

There's a universe of good bacteria living in your digestive tract. Here's what to feed them.

Keeping your gut bacteria happy may lead to better overall health.

Your gut is responsible for more than digestion; it can reveal illness, too.

The kinds of foods you eat—and what you feed your body’s friendly bacteria—may matter just as much as how many calories you take in.

While much of your cancer risk is out of your hands, you may be able to lower your odds by managing your weight.