Steroid use led to murder

Audrey Allen, an 18-month old child, was murdered by Joshua Allen Kruzik.
The baby was murdered because she cried in the middle of the night. Joshua Allen Kruzik, an US marine, a friend of Audrey Allen’s parents, was invited to spend weekends at their friends’ home. Before he came to their home, he was at a local bar where he drank much alcohol. He had to care about the little child, when she cried. But Joshua Allen Kruzik beat the baby too inhumanely. As a result, the little child got a lot of severe head injuries. The little child died at a local hospital.
David Kohn, the defense attorney for the murderer, affirmed that steroids were responsible for the aggression of his client. It was affirmed that the killer used anabolic steroids. Before the incident he tried to stop administering these products but he couldn’t do it. David Kohn stated that anabolic steroids caused “roid rage” in Joshua Allen Kruzik. He couldn’t not control his aggression and beat the baby. According to the defense attorney, Kruzik was unconscious. However David Kohn said that his client was ready to take the total responsibility, he added that he was not guilty.
The little child’s parents also testified that the murderer took anabolic steroids. The mother of the child confirmed that she possessed syringes at her home. Thus, she injected Kruzik with steroids, when he came. Several other individuals also affirmed that he applied steroids.
It is strange that anabolic steroids are demonized in this case. Are these preparations responsible for the murder? Remember that Joshua Allen Kruzik has been drunk, when he has murdered the baby!
It is unclear whether this defense strategy will work.