Talk about missing the point. As discussed in Good Calories, Bad Calories (aka The Diet Delusion), there was a study done of mice in which a group of mice was bred with knockout genes in order to be much more obese than normal mice. However, they were given the exact same diet as a group of normal, healthy mice. The obese mice had no higher rates of any of the illnesses commonly associated with obesity (diabetes, heart attacks, etc).

But a group of mice that were fed with an unhealthy diet to become equally obese had all of those problems.

Obesity and other health issues have a common cause. Obesity does not cause (most) health issues it is commonly associated with. Solving obesity without solving the common cause will do little more than make us feel better about ourselves.

Being obese doesn't make you unhealthy--being unhealthy makes you obese.