And he waited until he secured his financial future before he let himself go completely. That suggests to me that he had some control. People can't time their depressions.
I am so sick of everything being called a disorder. The one that really kills me is sex addiction. A friend of mine made a great point. You will never find a single guy in rehab for sex addiction. There isn't a single guy who will ever go to rehab because he is having too much sex with too many women. He might write a book, but he isn't going to rehab. In rehab, you will find married or engaged guys that got caught. For married and engaged guys, it is a condition... an addiction, but single guys are ladies men?
As for eating addictions, there are plenty of ways to enjoy food but eat healthy. If self-control is an issue, he had plenty of means and opportunity to hire people to look after his needs at a very small cost. I don't equate being fat with a mental disorder beyond someone's control. He clearly kept it under control until the ink was on the contract. There is no such control with depression or other mental conditions.