My father has said my stutter was caused by my parents divorce. That I didn't take it well. Which I didn't, so there might be some truth to that. However, when I was 4-5 years old I got a skull fracture and a concussion after a bad fall down a cliff. At the back of the brain sits the brain components that controls our speech. My parents didn't see what happend that day but I slammed the back of my head towards a brick wall at speed. Might be that I damaged something in the brain by the impact.