date:Oct 15, 2012
On its surface, the cause of the Western world's obesity epidemic seems simple: People are eating too many calories and getting too little calorie-burning exercise; the imbalance manifests as excess fat.
But this explanation is too simple. Even low-calorie diets and vigorous exercise fail to work in the long term for at least some people.
Here's why: Exercise, while vital to good health, is a poor exclusive means of weight control. Excess exercise tends to be counterbalanced by excess hunger,