People living with inflammatory bowel disease (Crohn's and ulcerative colitis together) worldwide, 2021

3.83 million

people, worldwide

“In 2021, there were 375,140 new cases and 3.83 million total cases of IBD.”

American Journal of Gastroenterology 2025, Disproportionately Increasing Incidence of Inflammatory Bowel Disease in Female Patients and the Elderly: An Update Analysis from the Global Burden of Disease Study 2021, 2024-10-18

Kind of source

Peer-reviewed study

Read on

2026-11-07

Daily check

Quote found at the source on 2026-11-07

What to know

GBD 2021 counts Crohn's disease and ulcerative colitis together as IBD, so this applies to both and is neither one's own count. Each GBD round re-models the whole series, so it is not directly comparable with GBD 2017's 6.8 million (gbd2017-ibd-prevalence-2017).

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Crohn's diseaseUlcerative colitis