It’s all part of the increase in performance enhancing drugs generally. Every gym has someone they can be bought from, and the temptation for amateur bodybuilders as well as people who work in industries which need power like doormen and security to use them is very strong. As well as those sort of drugs students and employees are increasingly using cognitive enhancing drugs to get an edge too.
We are slipping into a chemically enhanced society without really being aware of it. The dangerous part of it is that the next angry driver you see might be in an uncontrollable steroid fuelled rage. Because steroids can cause uncontrollable anger and murders have been committed under their influence.