Adult Onset Stutter

Adult Onset Stutter How’s it going guys? Was wondering if there are any new details on adult onset stuttering. I started to stutter at 28 after I had a nervous breakdown from alcoholism. It started very slowly but then ramped up. I still have it although sometimes it disappears completely. Speech therapy does seem to help with it. An MRI said there was nothing abnormal in my brain besides a chiari malformation. I should also add I have Asperger’s. Just wondering if there’s any new info on how these stutters happen, and the best way to treat them. I have no other neurological symptoms either. Completely healthy at age 34