Where did you learn we stutter bc of high levels of serotonin and dopamin? Ive been stuttering since I was 6, am 43 now. My father also stuttered when he was alive. This is the first ive heard ab serotonin or dopamine in relation to this great gift we have been blessed with. The one thing I have noticed though, is none of us, not a single on of us, stutters when we sing. I could be wrong about "not a single one of us" bc I dont know every stutterer on Earth, but, from what I know about this; most of us dont stutter while singing. Im not saying to sing/talk. But there is something there. Anyway, I am sorry you are experiencing this. It really sucks.