My first thought is yes, the confidence, but as you may know, the confidence is directly correlated to the stutter, or lack thereof. Went to my doctor because my sex drive (and sex life) had fallen off a cliff for reasons I don't really know, there wasn't a eureka moment or anything. Prior to going to the doctor for assistance I decided to buckle down on my own health, the things I can readily control which included cold turkey quit all alcohol, weed, and nicotine. Gym 3x a week, pushing it each time, and my nutrition was committed as well, minimal processed or bad foods in addition with hitting my macros. After five months of this not working (low sex drive) I sought professional help for what I thought was symptoms of low T. The blood test revealed I actually had above average T for my age, but the doctor still prescribed TRT to alleviate symptoms. To put it lightly, TRT solved the sex drive issue in spades. Plenty of other side effects, but the main reason was solved. Interestingly enough the effects of the TRT on my stuttering waned a little towards the end from perfect to less than perfect but still way better than it was before. I was doing one butt shot a week, which I later found out is inadvisable compared to two smaller shots a week (I am not a doctor, take everything I say with a block of salt).