Your gut controls weight in some mysterious ways

Surgery for obesity began with a simple premise: if you make the stomach smaller, people will eat less, so they will lose weight.

But in recent years the results of obesity surgery have been so outstanding, researchers went back to the drawing boards to figure out what was going on.

Their findings are beginning to present a far more complicated picture of weight — and of how much diet and exercise can really do to change it. Turns out, a slew of hormones from the gut, and their communication with the brain, play a role in the way the body maintains and loses weight.

Your gut controls weight in some mysterious ways - Health - Diet and nutrition - msnbc.com