Really this guy...
Doesn't make you suspicious?
Well that pic does ... a bit
It's possible I guess, I'm not really too confident either way since I haven't followed his career too much or seen him fight that often.
But overall I put him in my Cheick Kongo territory ... guys who really physically look like they could be on the juice but are just on the borderline of being obvious one way or another.
He could just be on supplements and genetics, he's always been this built, no sudden mysterious gains, or any of the other telling signs.