Do steroids have something to do with murder committed by Oscar Pistorius?

Oscar Pistorius admitted that he had shot his girlfriend Reeva Steenkamp. But the sportsman stated that he had murdered her because he had mistaken her for an intruder.
Police officers try to determine why the sportsman actually shot his girlfriend. They discovered anabolic steroids at his home.
Since steroids have been discovered in Oscar’s bedroom, it would be probably argued that steroids caused uncontrolled aggression in the athlete. Anabolic steroids would be blamed for the murder.
In fact, you should comprehend that it is quite hardly to state that anabolic steroids are responsible for aggression and violent behavior. Studies linked with this issue are quite limited. According to results of several studies, steroid users are predisposed to aggression, paranoia, jealousy, etc. It is stated that those who use steroids are more likely to commit crimes than those who have nothing to do with these medicines. But it is important to take in consideration that anabolic steroids may just contribute to aggression. Just these products alone can’t cause aggression. They turn out to be only factors that contribute into uncontrolled aggression. Other factors should be also present in order to cause aggression. Circumstances play significant role in such situations. So, it is even impossible to determine whether anabolic steroids cause aggression or certain circumstances. Cases should be reviewed as a complex of steroid use and circumstances.
It is also stated by experts that high testosterone levels are linked with aggression in certain persons. So, it is important to notice here that while some persons with increased testosterone levels experience aggression, others with increased testosterone levels are not predisposed to uncontrolled aggression. This effect differs from one individual to another.
You can see that the connection between administration of steroids and aggression is a complicated issue. Scientists have not studied this condition well enough to implicate it. Thus, if defense lawyers of the Olympic athlete want to argue that steroids have made their client to kill his girlfriend, they should recognize that they are going to utilize controversial statements.