[daeken]

No one is claiming it's a personality trait, though that absolutely could be a part of it. More likely, it's because police officers can act with impunity in pretty much every scenario. Add in a high-pressure job, and you've got a recipe for abuse.

[HarryHirsch]

Nevermind the fact that steroid abuse is common in the police. The BMJ has a lovely factsheet on anabolic steroid abuse: https://bestpractice.bmj.com/topics/en-us/987

Risk factors: "employment as nightclub bouncer, professional male dancer, professional wrestler, or law enforcement officer"