Being Overweight
The risk for sleep apnea is higher for people who are overweight. A person who is overweight may have more fat stored around his or her neck. This may make the airway smaller. A smaller airway can make breathing difficult, loud (snoring), or stop altogether.
Fat stored in the neck and throughout the body may produce substances that cause inflammation. Inflammation in the neck is a risk factor for sleep apnea.
Weight Loss
Weight loss usually improves sleep apnea. Weight loss may help to decrease neck size and lessen inflammation.