He mentions it in this interview.
He was diagnosed earlier this year with type 2 diabetes. He mentioned he excessively drank coke - would chug an entire can before he started his day. Look up how much sugar is in one can of coke. And that's only the beginning.
Then you have all the junk food that he ate on top of that.
Luckily now he is drinking black coffee and he goes for a walk first thing in the morning and after lunch.