DAVID MARKS, MD: For example, if someone's normal cycle is, they go once every three days, and then they start going every day, is that considered diarrhea?
LUCINDA HARRIS, MS, MD: I wouldn't consider that strictly diarrhea. I'd consider it a change in bowel habit, for which consulting a physician might be an important thing to do.
DAVID MARKS, MD: What are some of the causes of diarrhea?
LUCINDA HARRIS, MS, MD: Some of the causes of diarrhea can be dietary. Certain people have food intolerances, either to lactose, which is a milk sugar. And we all lose the ability to digest that milk sugar as we grow up, to some extent, some people more than others. There can be other causes, such as sorbitol, which is found in chewing gums and artificially sweetened candies. Also, some people are not aware that high fructose corn syrup, which is in some of the juice-like beverages or fruit punches, can also be a cause of diarrhea.
In addition, there can be endocrinologic conditions like thyroid disease or diabetes that can cause diarrhea. Medications can be another cause.
DAVID MARKS, MD: I notice you didn't mention infections.
LUCINDA HARRIS, MS, MD: Infections, that is a very cause.
DAVID MARKS, MD: Could be the most common cause.
LUCINDA HARRIS, MS, MD: That's true.
MARK POCHAPIN, MD: The other thing, in addition to infections, are inflammatory conditions, where you have inflammation within the intestine itself. Now, an infection can cause an inflammatory condition, but sometimes it occurs on its own.