Crime committed by drunk US marine

Audrey Allen, an 18-month old child, was killed by Joshua Allen Kruzik.
The little girl was killed because she cried in the middle of the night. Joshua Allen Kruzik, an US marine, a friend of Audrey Allen’s parents, decided 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 baby, when she cried. But Joshua Allen Kruzik beat her very cruelly. As a result, the little child got numerous severe head injuries. The little girl died at a local hospital.
David Kohn, the defense attorney for the murderer, noted that steroids were responsible for the abnormal behavior of his client. It was confirmed that the murderer used anabolic steroids. Before the incident he attempted to discontinue applying these medicines but he was not able to do it. The defense attorney claimed that anabolic steroids produced “roid rage” in Joshua Allen Kruzik. He couldn’t not control his aggression and beat the little child. According to David Kohn, his client was unconscious. Although the defense attorney said that his client was ready to take the total responsibility, he added that he was not guilty.
The little girl’s parents also confirmed that their friend applied anabolic steroids. The mother of the baby said that she had syringes at her home. Thus, she injected Kruzik with steroids, when he came. Several other persons also affirmed that he took steroids.
It is strange that anabolic steroids are blamed in this situation. Are these medicines responsible for the murder? Take into account that Joshua Allen Kruzik has been drunk, when he has beat the child!
It is unclear whether the judge will accept the steroid excuse.