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1 Artificial Sweeteners Artificial sweeteners and sugar alcohols, particularly mannitol and sorbitol, can cause diarrhea in some people. 2  Mannitol and sorbitol linger in the stomach, Schiller says, which can result in bloating and diarrhea.
Sugar-free gums and candies usually contain sugar alcohols (sweeteners) that may cause diarrhea. Any foods that form gas will likely be a cause for diarrhea also. Some of these foods are: onions, beans, cabbage, peas, broccoli, cauliflower, whole grain breads and cereals, nuts, and popcorn.