he's not abusing his health guys. he goes completely off dur :Ding the offseason and uses food as his main anabolic during contest prep.
Supposedly Aceto pushes this approach, going off or HRT in the off-season. I think it's possible, he doesn't look real jacked up at the start of his diets plus he starts gaining weight. Kamali also claimed Chad required going off and doing a PCT after shows, "Chad wouldn't even talk to me if I didn't".

Of course, once diet is on, he's pushing it hard. How hard I don't know but it's no HRT.
I think you can limit damage this way.