It is well known that caffeine, a major ingredient of eg. coffee and tea, can result in increased stress levels, and as a result many people – me included – believe that people who stutter should avoid caffeine-containing drinks and foods, as stuttering is, for many people if not most, to some extent stress-related.
I can think of a few possible reasons:
Have a look at the results of the informal survey below, and please participate if possible. From the results it would appear that a large majority of people who stutter find that drinking tea and coffee make them stutter more.
NEW POLL DATED 4 JULY 2013 - PLEASE TAKE PART!