still a lot of research that needs to be conducted on stuttering but one this is for sure, it’s sure is an interplay of both hormones and environment. with the former being open to change at first but most of us doesn’t have the privilege to be in a healthy and safe space. we always have to endure our childhood and our struggles growing up which suppressed this openness to change of our brain. but yh we will endure like we have endured many many struggles. i firmly believe most of us who stutter are the most empathetic and senstive individuals.