I read a number of years ago that genetic factors in human obesity accounted for about 5% of the population. That can be a pretty significant number.

It seems that in the last several years, the rate of obesity is increasing. Can that be attributed purely to genetic reasons?

Junk food and fast food are unhealthy for slim people too. Slim does NOT mean healthy. Crappy food is crappy food.

When I started substituting the concept of 'healthy' as opposed to 'thin', the picture got bigger and life became a bit easier.