jesus christ guys, cut one of our biggest cultural icons a fucking break!! He's roughly 60 years old, has had BOTH hips and BOTH knees replaced, and up until a year or 2 ago, still did some surprise matches. Yes his skin isnt the greatest from all the sun, but jesus, his arms are still bigger than I'd say 99.9% of the guys on this board. Not to mention he's rich as hell, has a wife that I'd bend over anyday, and a good relationship with his kids (which you can't put a price on).
But to answer your question, he's most likely on HRT and GH. He also is anal about supps and his diet. Again, probably more so than a lot of guys here that take 2 grams of gear a week and eat shit and drink too much.