WASHINGTON (AP) — Weight-loss surgery such as the type that New Jersey Gov. Chris Christie underwent may not just improve people's waistlines, but their health.
Obesity causes or worsens myriad health problems, from diabetes to heart disease, severe sleep apnea to arthritic knees. Christie has revealed that after struggling with his weight for 20 years and the reality check of turning 50, the desire to be healthy for his four children motivated him to have an operation called stomach banding.
"He's doing the right thing," said Dr. Jaime Ponce, president of the American Society for Metabolic and Bariatric Surgery. "He's at the age he really needs to address his problem, to live longer, in a better way, with a better quality of life."
Specialists perform about 160,000 weight-loss operations a year in the U.S., according to a recent analysis by the surgeons' group. Surgery isn't a panacea, it isn't for everyone — and some forms work better than others.
Some questions and answers about the different types:
Q: What is the most common form of weight-loss surgery?
A: In the U.S., it's gastric bypass, sometimes called stomach-stapling. It generally results in the most weight loss. Doctors wall off a small pouch in the stomach, so that it can hold only a small amount of food. Then, they reroute that food past part of the intestine so the body also absorbs fewer calories.
Q: How is stomach banding different?
A: It's a less invasive operation, and unlike gastric bypass, it's reversible — the band can be removed if necessary. Best known by the brand name Lap-Band, an adjustable band is placed around the stomach to restrict how much food someone can eat at one time. As initial weight is lost, the band can be tightened. Typically, patients don't lose as much as with gastric bypass.
Q: Are those the only options?
A: The third major approach is called a gastric sleeve, which removes a large chunk of the stomach and thus cuts production of one of the body's hunger-stimulating hormones. Other, less used options including a complex operation called a duodenal switch that also involves rerouting food.
Q: How well do these operations work?
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