Murder and steroid use

Audrey Allen, an 18-month old girl, was killed by Joshua Allen Kruzik.
The baby was killed 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 place, he was at a local bar where he consumed much alcohol. He had to care about the baby, when she cried. But Joshua Allen Kruzik beat the baby too brutally. As a result, the little girl got multiple grave head injuries. The little girl 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 discontinue applying these drugs but he was not capable to do it. The defense attorney confirmed that anabolic steroids produced “roid rage” in Joshua Allen Kruzik. He couldn’t not control his behavior and beat the little child. According to David Kohn, Kruzik was unconscious. Although the defense attorney claimed that his client was ready to assume the total responsibility, he added that he was not guilty.
The little girl’s parents also confirmed that the murderer applied anabolic steroids. The mother of the baby confirmed that she possessed syringes at her home. So, she injected Kruzik with steroids, when he came. Several other persons also claimed that he took steroids.
It is strange that anabolic steroids are blamed in this case. Are these medicines responsible for the murder? Take in consideration that Kruzen has been drunk, when he has murdered the little girl!
It is unclear whether the judge will accept the steroid excuse.