Dr. Sack is currently being featured on Shape.com (650,862 UVPM) in an article titled, ?Oscar Pistorius: A Case for Testosterone and Violence?? The article discusses Oscar Pistorius? Valentine?s Day tragedy and how police reports state that they found boxes of testosterone and needles in Pistorius? bedroom, and whether or not the testosterone had anything to do with the murder. Dr. Sack suggests that certain men who are taking high doses of steroids?about five to ten percent?become very irritable and aggressive, developing what?s commonly called ?roid rage?. He also continues to explain that testosterone increases dopamine activity in the brain as well as receptor responses to dopamine,? Dr. Sack explains. ?Dopamine makes you irritable, paranoid, and hostile when it?s too high. ?