I would imagine he's referring to AAS in general. I mean the strain it puts on the liver, kidneys, heart, not to mention the fucking hairline. But I think most of it is just forcing your body to put on mature looking muscle as they say with tren. It just matures you in general. Guys with hairlines just look older in general. Especially when all dehydrated with leathery shiny papery skin. Plus if you are eating healthy, bones get thicker and everything just looks exaggerated, brows, cheeckbones, jawlines. It just matures you man. You skip your youthful 20's and hit mid 30's looking. Look at fucking Aaron Clark man. He's what....25?