There is a lot of debate surrounding whether or not stuttering is a brain disorder. Some experts believe that it is, while others think it isn't. There is still a lot of research needed in this area to say one way or the other definitively. However, there are some indications that stuttering may be related to brain activity.  For example, studies have shown that people who stutter tend to have different patterns of brain activity than those who don't stutter. Additionally, some experts believe that stuttering may be genetic and could be passed down through families. Ultimately, more research is needed to determine whether or not stuttering is a brain disorder.