The exact cause is unknown, mostly due to the variables involved. There is developmental stuttering, where kids start stuttering around age 3 and then it spontaneously resolves itself around age 5-6; this appears to be a part of normal speech and language development. Then there is acquired stuttering. Those kids who don’t have their stutter resolve at age 5-6 continue to stutter at different levels for the rest of their lives. A lot of these kids start stuttering at around age 2. This is the category most of the people in this sub fall in. There is evidence of this stuttering being caused by genetics, environment, or neurological makeup; possibly a mix of 2 of the 3 or all 3 together. And there is “pure” neurological stuttering that is seen in individuals who have a brain injury. This type of stuttering is difficult to pin point where in the brain it happens, because when the primary injury is treated (the brain trauma) the stuttering typically resolves itself. No one knows the cause of stuttering. We just know there are tons of variables that are associated with it. As for me, I believe regardless of the type of stuttering you have, it is primarily neurological. When we speak, the spot in the brain that activates is called Broca’s area. Studies have shown that people who stutter have an extra spot in the brain that activates when speaking, this area is behind Broca’s area and is associated with motor movements (like talking). When speaking, motor movements run through the basal ganglia, which regulates our motor movements, smooths them out (aka making those movements appear “normal”). Something happens between those 2 points that disrupts speech for people who stutter. Sounds simple enough, but if that was just it, we’d have a better idea of how to treat it (I.e. - a possible cure). That’s why genetics plays a part (if you have a family member who stutters, offspring has a higher chance of stuttering). You can’t treat genetics. And environment plays a part (bullying, household expectations on speaking “properly”, etc.) which can lead to psychological/emotional issues, which are difficult to treat. With those variables, it means any treatment for stuttering is not one size fits all. Some strategies work for some and don’t work for others. If you find something that helps, by all means, use it and share with others. Just know that what works for you may not work for the next person. I wish I had the answer. It would make myself and a lot of other people who stutter happy.