A noisy release of gas from the stomach through the mouth. Also called belching or burping.

An abnormal passage between two organs, or between an organ and the outside of the body, caused when damaged tissues come into contact and join together while healing.

Liquids produced in the stomach to help break down food and kill bacteria.

Testing a population group to identify a subset of individuals at high risk for having or transmitting a specific genetic disorder.38

See intestines.

A virus spread by blood transfusion (prior to July 1992) and possibly by sexual intercourse or sharing needles with infected people. Hepatitis C can lead to cirrhosis and liver cancer. Hepatitis C used to be… 

An odorless, colorless, flammable gas that combines chemically to form water.

Diarrhea caused by infection from bacteria, viruses, or parasites. See traveler

The middle section of the small intestine between the duodenum and ileum.

Medicines that relieve long-term constipation. Also called cathartics.