ulcerative colitis: Quick Facts

Written and fact-checked by

The Information Architects of Encyclopaedia Britannica

Last updated

Nov. 3, 2026

News •

Ulcerative colitis burden across 7MM to exceed 2.36 million cases by 2035, forecasts GlobalData • Oct. 28, 2026, 9:04 AM ET (News-Medical)

Your blood could reveal inflammatory bowel disease 10 years before diagnosis • Oct. 24, 2026, 7:54 AM ET (Science Daily)

Topics

large intestine inflammatory bowel disease colitis Crohn disease

Dig Deeper: More Articles That Discuss This Topic

inflammatory bowel disease: Introduction

44 Questions from Britannica’s Most Popular Health and Medicine Quizzes

full human skeleton

Diseases, Disorders, and More: A Medical Quiz

A Yorkshire terrier dressed up as a veterinarian or doctor on a white background. (dogs)

A Visit with the Word Doctor: Medical Vocabulary Quiz