Normally eating watermelon on an empty stomach will not cause diarrhea, but if the watermelon eaten is especially cold or eaten especially much watermelon, there is a possibility of diarrhea.
In general, patients eating watermelon on an empty stomach will not affect gastrointestinal function and diarrhea will not occur, but if patients eat chilled watermelon, watermelon that has been spoiled will stimulate the gastrointestinal tract and diarrhea may occur, and if patients eat too much watermelon, diarrhea may occur.
Therefore, watermelon can be eaten on an empty stomach, and diarrhea usually does not occur, but we should ensure that the watermelon is hygienic, and do not eat watermelon that is too cold. If you accidentally eat too much watermelon or watermelon irritation caused by diarrhea, you must hydrate in time to avoid dehydration caused by diarrhea, and consult a doctor in time to clarify the cause of diarrhea and treat accordingly.