A new survey in the Wisconsin Medical Journal says that the state has had one of the largest populations of overweight adults in the U.S.
Some 80,000 people are dangerously overweight and drastic measures like gastric bypass have become more common.
The number of surgeries in Wisconsin have more than doubled, from 182 in 2001, to 426 in 2002.
Doctors say the risks of getting the surgery outweigh the risks of living with morbid obesity.
"Prevention would be better," says Dr. Tim Pitchford. "But (in these cases) this operation can be life-changing for the good."
The study also reported that almost 1,000 bariatric stomach procedures took place in state hospitals in 2003.
The full study can be found in the Wisconsin Medical Journal.