As we age, our digestive systems can become more sensitive to certain types of foods and methods of food preparation. While you once may have handled the spiciest of foods without breaking a sweat, now that super-hot chicken curry gives you the digestive drama known as diarrhea - uncomfortable, unformed, watery stool. Sometimes diarrhea occurs because of an underlying condition, or as a side effect of a medication. However, diet is often the cause. Diarrhea triggers The following can cause