One of the most flabbergasting things I heard him say last season when he started off well (before the pcl tear), faster than before, was him saying he finally started eating better. Really? Even after 10s of millions of dollars, you couldn't eat better beforehand? You had to wait until you were visibly slowing down?
Its not unique to him. Lots of these guys are pure athletes and they don't train very hard to get to their optimal play weight, but that catches up with them the older they get, or with how bad their diet is. I remember Dwight Howard being almost diabetic because his daily intake was just skittles and junk food until he hired a trainer that told him how much difference diet makes. This was like 10 years into his career.