Despite what most believe, stuttering is not caused by being nervous or anxious! There are of speaking situations such as public speaking or speaking with an unfamiliar person which cause elevated anxiety and nervousness. For people who stutter, however, it is a different kind of being anxious/nervous. When a person who stutters experiences it, it is most often due to past negative experiences where they were very disfluent and are now fearful of that repeating. Having said that, stuttering is a neurological disorder which is there whether a person is calm in a comfortable speaking situation or nervous due to the expectation of a more severe stutter to come forth.
Thanks for your blog, nice to read. Do not stop.