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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.
1 Food additives such as sorbitol and mannitol are found in a variety of foods from yogurt to candy. These sweeteners cause gas and bloating because they are not absorbed well in the intestines. Bacteria in the bowel eat these sugars which causes more gas.  Caffeine is also a food that can cause diarrhea.