Son is 23yrs old, working full time, lives at home, pays rent. I have had the usual issue, such as staying out late, girlfriend around all the tine, mess etc, but recently have found out he’s injecting testosterone. I feel very upset about this & have spoken to him, explained the risks etc. He is using testosterone to increase muscle mass nothing more, and does not need it medically. He basically has said it’s his life, his body. So I have said I do not want it in the house & not to use it in the house. I have younger children and do not want them influenced or aware of this behaviour. He obviously is not very happy about this, saying there’s no privacy, he’s an adult and should be allowed to do what he wants. He also wants girlfriend to stay over. So I said get your own place and then you can. AIBU to have said this??? I feel bad now, I love him very much and want him to stop using testosterone. Is it time for him to move out so then he matures a little?? What would others do?? I do not know where he got it from, he won’t tell me.