Former cruiserweight world champion Tony Bellew had quite the reaction on Twitter following a comment made from a former world champion of the sport that he did not so much agree with.Boxing stars Canelo Alvarez and Gennady Golovkin were all set for their middleweight title fight, before the Mexican boxer failed his drug test prior to the bout, which created quite the stir in the boxing community.The fight has now been rescheduled for September 15, however, there is a much bigger issue going on in boxing that needs to be more heavily addressed according to some competitors and fans of the sport.The use of Performance Enhancing Drugs (PEDs) has not only been widespread, but also very significant because of how much of a public stir it creates when people are caught taking these illegal substances.Canelo is not the only one who has failed a drugs test, of course, in recent times in boxing.The heavyweight division in particular over the last couple of years has had plenty of notable problems too.Organisations like the WBC have brought in random testing for the top 15 in each division of their rankings as part of their ‘Clean Boxing Program’, but many fans think a lot more could be done.Former female boxing champion Mia St John, in a response to a tweet from Lance Pugmire stating that Golovkin has branded Alvarez a dirty cheater for attempting to get away with taking PEDs, has said: "Whatever 🙄Everyone does it & everyone in boxing knows it."A professional opinion from a world champion herself, however, this tweet was very distasteful for former champion Tony Bellew, who angrily responded back with his own thoughts on the matter.The Brit in response to Mia St John said: "Sorry to inform you BUT NOT EVERYONE does it sweetie! Some of us former world champions actually believe in training insanely hard and having a fair fight and what will be will be, It’s sad and worrying that people taking PED’s actually think like you do! 😔 #BanThemForLife."

Despite who is "right" on the matter does not scrape the underlying meaning of what this means for the sport of boxing.

PEDs, despite the increasing amount of protocol to limit their useage, still causes problems within the sport.

It remains to be seen if anything will come about of this social media exchange, or Alvarez's failed drug test, but either way it still seems that there are problems within the sport to still be solved.