There was rumors that Sonny Liston was heroin user and Ron Lipton said that was true and that Liston and Joe Louis were great friends and were taking heroin for years.If that was true I am impresses how Liston was unique physical specimen because he was still strong as hell in his last fight with Wepner despite the fact that he was probably 45 years old and heroin addict.
Liston had a needle phobia and it's highly unlikely he took heroin. Joe Louis did. Joe was too paranoid to go out and get the stuff himself and Liston got it for him through his thug contacts. One of the persistent rumors is that the Mob was giving heroin to Liston because he told them it was for Joe. Liston started selling part of it and he was soon found dead.