<human>: Could you distill the essence of the text into 1-3 sentences?

Dating for almost 3 years now, I recently found out he's started using steroids.

He has this small cabinet in his office that I opened up while cleaned and found a bunch of small vials and pills. At first I assumed it was some sort of medicine, I googled what it was - testosterone, anavar, dianabol, clenbuterol. Most of it was unoppened though. Obviously I freaked out when I found out they were anabolic steroids.

I confronted him about it after he came back from work. He seemed really to not even care that I found out, he just had this "yeah, so?" attitude about it all and didn't really see an issue. I've asked him how long he's been using steroids and he said that he's been on them for the last 7 months or so. I was just generally confused. I was angry, confused, sad and just completely thrown off at the same time. He just said that he knows what he's doing because he researched it and he doesn't really see a problem with it. I tried to argue with him, he just said "You're fine with me using creatine and whey, what's the difference? They're just supplements".

I started saying that I was worried about his health, he started listing off people who are on steroids who are well into their 70's, 80's and he just said "Would you rather live to be 60 but in amazing shape and full of energy, or live to be a 100 and suffer for 40 years of being old and fragile?" It was just a really bizzare conversation. I also asked him why he thought he needed it - He's in amazing shape, he always has been. He just told me he's old and "Why not"

I don't know what to say or do now. He said he's not going to argue about this or "listen to anything from someone who doesn't know anything about this subject". I told him to call a doctor and he responded by saying "Find a doctor who lifts weights religiously and then I'll talk to him."

What should I do?
<bot>: boyfriend has been using anabolic steroids for the past 7 months. Says there's nothing wrong with it. Don't know what to do.