Bland foods are the best dietary weapon against diarrhea, and some examples include pretzels, saltine crackers, toast and boiled potatoes. Foods with probiotics, such as yogurt, contribute the good type of bacteria to the intestinal tract and can also shorten the length of an outbreak of diarrhea, notes Everyday Health.
The purpose of eating bland foods is to remove any possible irritants from food intake, such as spices, and use starches to make the digestion process as easy as possible. Bananas, plain white rice and applesauce are examples of foods that make their way through the gastrointestinal tract as gently as possible, as stated by Everyday Health.
While yogurts may contribute helpful probiotics to the digestive tract, other dairy products often do not sit well with people suffering from diarrhea. The sugar lactose, present in many dairy products, causes irritation in many diarrhea sufferers, even those who are not lactose intolerant. Other foods to avoid include anything greasy or fatty. Caffeine and alcohol, which serve as diuretics, also should be avoided. Artificial sweeteners, which can act as laxatives, and any foods that lead to excess gas, such as broccoli, cauliflower, beans and cabbage, can cause worsening of diarrhea. Adding favorite foods back to the diet is fine once the diarrhea has passed, according to Everyday Health.