What should be avoided in diet for someone experiencing diarrhea?

In the context of managing diarrhea, it's crucial to avoid certain foods and substances that can further irritate the digestive tract or exacerbate symptoms. Citrus, fats, dairy, caffeine, and alcohol are all known to be difficult for an already stressed gastrointestinal system.

Citrus fruits are acidic and can irritate the stomach, while high-fat foods can be hard to digest and may increase gastrointestinal upset. Dairy products can lead to lactose intolerance symptoms for some individuals, especially those who may already be experiencing digestive issues. Caffeine is a known stimulant that can increase bowel movements, potentially worsening diarrhea, and alcohol can irritate the digestive lining, contributing to dehydration and further complications.

In contrast, gentle foods such as vegetables (that are not fibrous), rice, and some lean meats can be part of a "BRAT" diet (bananas, rice, applesauce, and toast) which is typically recommended to help firm up stools and provide needed nutrients without irritating the system. Thus, avoiding the specified items in the second option is particularly relevant for managing diarrhea.