Should obesity be treated as a disease?

Encyclopedia of Opinion

Question: Should obesity be treated as a disease?
Position‹2 of 3›: Obesity is not a disease
Argument1 of 3›: Obesity is caused by overeating

Obesity is most often caused by poor food choices. When a body burns less than the calories provided, people gain weight.

The argument

Once people are obese they are used to eating unhealthily and don't want to stop. While a lot of energy is used to move a heavier body, obese people are used to large quantities of food and continue to live an unhealthy lifestyle due to their own decisions. Obesity is not a disease, as it is self-inflicted.

Context

As the years go on, the percentage of Americans and other first world countries' citizens who have unhealthy lifestyles is rising. One-third of the world is overweight or worse and is usually self-inflicted.

Premises

[P1]Once obese, people are accustomed to eating large quantities of unhealthy food and do not want to stop. [P2] Despite the energy required to move a heavier body, they continue an unhealthy lifestyle through their own decisions. [C] Therefore, obesity is caused by overeating and is self-inflicted, not a disease.

Counter-arguments

When someone smokes regularly and gets cancer, is their cancer not a disease simply because it was self-inflicted? Just because the person's lifestyle was the reason that they are struck with a condition doesn't make it any less of a disease.

Rejecting the premises

[Rejecting P1] Diseases inflicted by oneself are just as valid as those naturally occurring. Obesity is a disease.