People who are obese are at risk for obesity hypoventilation syndrome (OHS). "Obesity" refers to having too much body fat. People who are obese have body weight that's greater than what is considered healthy for a certain height.
The most useful measure of obesity is body mass index (BMI). BMI is calculated from your height and weight. In adults, a BMI of 30 or more is considered obese.
You can use the National Heart, Lung, and Blood Institute's (NHLBI's) online BMI calculator to figure out your BMI, or your doctor can help you.
If you are obese, you're at greater risk for OHS if your BMI is 40 or higher. You're also at greater risk if most of your excess weight is around your waist, rather than at your hips. This is referred to as "abdominal obesity."
OHS tends to occur more often in men than women. At the time of diagnosis, most people are 40 to 60 years old.