For children with diarrhea, it is best to stick to a light, easily digestible diet. During diarrhea, a child's gastrointestinal function may decline, leading to indigestion or gastrointestinal disorders. In such cases, one must consume foods that are easy to digest, avoiding greasy, spicy, stimulative, and hard-to-digest foods. Meanwhile, sugar should also be largely avoided, as many instances of diarrhea in children are caused by lactose intolerance. Adding sugar under these circumstances can exacerbate the symptoms of diarrhea. Furthermore, some cases of diarrhea in children may lead to temporary lactose intolerance. In such situations, sugar should not be added as well. Thus, when dealing with diarrhea, it is advisable to refrain from consuming sugar.