In one of his biographys..I have read 3 of them, i believe it was Fire and Fury steroid use was mentioned..i can't remember if it was someones opinion or an actual account of him using. But yes most definitely I would say he does. He balloons up close to 300 pounds between his fights at times then gets ripped coming in at around 217. Another high profile fighter Tommy Morrison admitted his steroid use all through his career. These guys are competing for millions you can bet they are taking something.