Uncoordinated contractions down the length of the esophagus that may cause pain or trouble swallowing.

Medicines that aid or stimulate digestion. Examples are digestive enzymes for people with lactase deficiency or damage to the pancreas. (Brand names: Lactaid, Ultrase.)

The process the body uses to break down food into simple substances for energy, growth, and cell repair.

The organs in the body that break down and absorb food. Organs that make up the digestive system are the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. Organs that help with digestion… 

Bloating or swelling of the abdomen.

The plural form of diverticulum. See diverticulum.

A condition that occurs when small pouches in the colon called diverticula push outward through weak spots.

Abbreviation for deoxyribonucleic acid, the molecule that contains the genetic code for all life forms except for a few viruses. It consists of two long, twisted chains made up of nucleotides. Each nucleotide contains one… 

An ulcer in the lining of the first part of the small intestine, also called the duodenum.

An irritation of the first part of the small intestine, also called the duodenum.