The digestive system sometimes has food in it that might move really fast. This food that goes through fast is what causes diarrhea. It never goes through slow, and it always goes through very fast. If it went through slow then it would not turn out like diarrhea. Some food items might become inflamed, or either get irritated in the digestive tract other times it might be from germs that are infected and that is part of what causes diarrhea.
When the body needs to get rid of the germs, or irritants quickly the food starts to move really fast on the intestines on the muscles and cuts straight through the part that is the digestive system. The nutrients that is in the food might not be absorbed with the small intestines and after that the food which is not used must return to the body but only after the moisture that is excess can be removed. What causes diarrhea to be watery is just that because of how it is returned. Any moisture that is considered extra stays within the waste and does not return to the body.
People should always drink when they have diarrhea because what causes diarrhea might cause you to dehydrate and might make you sick or worst yet, land in the hospital from not drinking enough. Having food that is solid when having diarrhea can also cause problems. It is important to avoid any solid food while the body is trying to recover all of the activity that is going on in the digestive system. When having that kind of food it could take the body a longer time to heal or might repeat itself instead of healing.
The recovery of diarrhea depends on if the person has a stomach bug, or what causes it. Usually it goes away within 24 hours if it is caused from a bug but if it is from a bug or virus it might last longer. If diarrhea is a problem that is ongoing for over 24 hours the doctor should be notified to see if something is going on. The doctor should be contacted within 12 hours with children but only if the child keeps on having it. When a fever comes and someone is having diarrhea with it the doctor should also be notified. When concerned about diarrhea the doctor can go over the proper steps needed to stop it from happening so you can feel relief again.