I think it's HGH gut. Man's rich as hell, so of course he's going to pay for all the health and life-extending stuff he can get his hands on. Human growth hormone can combat aging, but it's not perfect.

HGH is known to be an effective generator of muscle mass, which is why it is so often a favorite for bodybuilders. However, there is a large concentration of growth hormone receptors in the large intestine, which can contribute to the intestine’s undesired growth. Specifically, this tends to occur when an individual uses illegal HGH without doctor supervision.