I'm pretty sure The Rock is turning 52 this year.
I think it's time for him to put the gear away. There's no reason for him to stay on, and cut his lifespan short by being so massive at an advancing age.
He looks a lot better now than he did in his youth or his wrestling "prime."
There are two possibilities.
1) He's on a boatload of gear + GH.
2) He's on TRT + GH + exotic treatments that blue-collar dopers don't have access to. (Probably dulaglutide for weight loss and appetite reduction, high doses of some sort of follistatin booster e.g. YK-11, possibly genetic alterations via CRISPR, and potentially much more.) He has the money, so it's possible that he's a self-financed science experiment.
If (2) is the case, he might be in fairly good health and may live a long time. But if he's just using lots of gear, I think that the Rock is a good candidate for this decade's deadpool.