Medically reviewed by Anju Goel, MD Key Takeaways Diarrhea is often contagious, especially when it's caused by viruses, bacteria, or parasites. Infectious diarrhea can spread by not washing hands ...

Plus, when it’s time to see a doctor.

Angela, 45, admitted that she drinks coffee "all day long" ...

Lymphocytic colitis is a bowel condition characterized by chronic, watery diarrhea and the buildup of white blood cells in your gut. It is most common in older adults. Lymphocytic colitis is a rare ...