I typed in [google](https://www.google.com/search?q=%22asthma%22%22stuttering%22+%22research%22): "asthma""stuttering" "research". [This](https://rehabilitationj.uswr.ac.ir/article-1-577-en.html) research study states: "*Results of this research showed there is a significant relationship between stuttering and asthma but there is no significant relationship between the other two kinds of allergies-rhinitis and dermatitis and stuttering.*"