What can cause diarrhea?
Not enough water in the diet and too much salt. Diarrhea basically occurs when not enough water and nutrients is absorbed into the intestines.
Infections, upset stomach, certain medications, too much diuretics (coffee, for example), too much Vitamin C, changes in diet...
Food poisoning, too much of a food, etc (actually ran out of causes XP)
Your large intestines didn't absorb enough water from your waste
bad food..most the time..
not enough water