Not him but because your answer surprised me I chose to reply: at 34 it is also something I always wondered.

Becoming obese always seemed a little extreme to me and I fail to imagine how someone could reach that state without the accordingly extreme food-related habits - though maybe I'm just lucky to have the "right" metabolism and thus cannot relate.

Though even if obesity was always linked to eating disorders, I understand that "just stop" is not an appropriate response to that issue.