"The Swedish study found that health care needs equalize over time, but what is really needed is a formal cost-effectiveness analysis," said Courcoulas.
The other study, conducted in Australia, compared 30 weight loss surgery patients to 30 people on a very low-calorie diet to see which group had a more significant improvement in sleep apnea symptoms. The surgery patients underwent a gastric banding procedure and lost an average of 61 pounds, while those on the diet lost about 11 pounds. Both groups experienced fewer sleep apnea episodes, but the difference between the two groups wasn't significant.
Courcoulas said this finding was "a little puzzling. It's hard to explain why there wasn't a relationship between weight loss and sleep apnea," given that the sleep disorder is associated with overweight and obesity. She added that "more work needs to be done here to understand the mechanism."
More information
Learn more about weight-loss surgery options from the U.S. National Institute of Health's Weight-control Information Network.
SOURCES: Ted Adams, Ph.D., M.P.H., adjunct associate professor, division of cardiovascular genetics, University of Utah School of Medicine, and program and research director, Health and Fitness Institute, LDS Hospital, Salt Lake City, Utah; Anita Courcoulas, M.D., chief, minimally invasive bariatric and general surgery, University of Pittsburgh Medical Center; Sept. 19, 2012, Journal of the American Medical Association
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