I'm not arguing that aggression is not a symptom od steriod use.
My post was to explain that it's not the case with Merriman. He's played the way he has since he was a child. Thee guy became a LB because when his Pee-Wee coach asked what position he wanted to play Merriman said he just wants to hit people.
The guy was so vicious that he actually was not allowed to practice in high school. The coaching staff just set him off to the side with hitting sleds and tackling dummies.
The guy is not aggressive because he's on a banned substance. He's aggressive because he wants to inflict pain like its been inflicted on him.