Shiitake mushrooms improperly handled may become contaminated with food-borne bacteria and viruses, which cause diarrhea. It is best to cook it thoroughly and avoid eating it raw.
Consuming large amounts of shiitake mushrooms may also lead to diarrhea due to the inability for your body to handle all of the mushrooms contents in one meal. Not only that, but extreme diarrhea may also be a symptom of an allergic reaction to Shiitake mushrooms. An allergic reaction is sometimes mistaken for food poisoning, since the symptoms are very similar.
You can find our favorite supplements containing Shiitake Mushrooms on the following page of our website to learn more.
Just remember that proper food handling, preparation, and just right consumption can reduce your chances of getting a diarrhea caused by mushrooms.