Bypass’s Big Boon

Scientists spot key players in surgery’s surprising ability to reverse diabetes

By Nathan Seppa, 11:27 AM August 25, 2011

Just in time to combat the obesity epidemic sweeping the United States, a surgery called gastric bypass is riding a host of molecular and clinical findings to emerge as the preferred operation for severely overweight people. There is no shortage of patients; fully one-third of U.S. adults are now obese.

Gastric bypass has gained popularity in part because it takes the pounds off. The operation leaves the stomach smaller, meaning a patient gets full faster, eats less and loses weight at a st...

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