I was once very overweight and loosed weight and also know other people, but never saw a person like him. There is a disease where the distribution of fat is wrong in a human body, it mostly affects women, but even there the distribution never looks like Musk. His legs look normal, but everything goes into his abdomen. According to the fat on his chest, he don’t seem to do sport. But other ppl with this amount of fat don’t have such a grown abdomen. Maybe HGH makes sense.