Monday, July 14, 2008

Obesity : Risk factors

Factors that increase your risk of obesity include:

* Genetics. Your genes may affect the amount of body fat you store and where that fat is distributed. Genetics may also play a role in how efficiently your body converts food into energy and how your body burns calories during exercise. Your genetic makeup doesn't guarantee that you'll be obese, however.
* Family history. If one or both of your parents are obese, your chances of being obese are greater. This may be due to shared genes or to a shared environment, which may include high-calorie foods and inactivity.
* Age. As you get older, you tend to be less active. In addition, the amount of muscle in your body tends to decrease with age. This lower muscle mass leads to a decrease in metabolism. These changes also reduce calorie needs. If you don't decrease your caloric intake as you age, you'll likely gain weight.
* Sex. Women are more likely to be obese than are men. Women have less muscle mass and tend to burn fewer calories at rest than men do.
http://www.mayoclinic.com/health/obesity/DS00314/DSECTION=risk%2Dfactors