A new study confirms that weight loss can significantly improve and potentially eliminate sleep apnea symptoms in obese people.
Researchers found that people with severe sleep apnea who lost the recommended amount of weight were three times more likely to experience a complete remission of their symptoms compared with people who didn't lose weight.
"These results show that doctors as well as patients can expect a significant improvement in their symptoms with weight loss," researcher Gary Foster, director of the Center for Obesity Research and Education at Temple University, says in a news release. "And a reduction in apnea symptoms has a number of benefits for overall health and well-being."
Sleep apnea is most common in overweight and obese people. The sleep disorder causes loud snoring and sleep disruptions as a result of the airway becoming temporarily blocked during sleep. If untreated, apnea can also increase the risk of high blood pressure, stroke, and heart disease.
In the study, published in theArchives of Internal Medicine, researchers looked at the effect of weight loss on sleep apnea in 264 obese adults with type 2 diabetes.
The participants were randomly divided into two groups. One group received a weight loss program with portion-controlled diets and an exercise programof 175 minutes of exercise per week. The second group received no weight loss advice and participated in a diabetes management program.
After one year, the weight loss group lost an average of 24 pounds; the second group lost just over 1 pound.
Those in the weight loss group were three times as likely to experience a remission of their symptoms (13.6% vs. 3.5%) and had about half the instances of severe sleep apnea as the second group.
In addition, the study showed that people in the second group experienced a worsening of their symptoms.
Foster says these results show that weight loss can significantly reduce the symptoms of sleep apnea and without treatment the sleep disorder can progress rapidly.
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