Epidemiology – How Common Is Ulcerative Colitis?
Prevalence and Trends
While mental health issues are the most common health concerns among adolescents in the United States, prevalence of other health issues like inflammatory bowel disease (IBD), including ulcerative colitis (UC), are increasing.
out of every 100,000 children and teens under 20 in the US are living with some form of IBD (prevalence)
out of every 100,000 children and teens under 20 are living with UC specifically (prevalence)
children and teens under 20 living with UC across the US
Source: Gastroenterology 2024
Prevalence of UC is Rising
A 133% increase in under a decade
Between 2007 and 2016, the prevalence of IBD in children and adolescents increased by 133%. The average age of diagnosis is also decreasing, meaning more children and younger adolescents are now affected.
UC incidence varies worldwide, with the highest rates in Europe and North America, and the lowest in Asia, South America, and the Middle East.
Time of Onset
Ulcerative colitis used to be most commonly diagnosed in adults, as shown in the timeline above. However, roughly 15–20% of all ulcerative colitis is now diagnosed before the age of 20. This is a noticeable shift toward diagnosis during early adolescence and childhood.
Onset can look different for everyone
The specific onset of ulcerative colitis can be difficult to determine. In some cases, symptoms appear and worsen over time, while in others, they start suddenly and strongly.
Gender and Race/Ethnicity
What the research shows
Most research studies have not found gender differences among children and adolescents.
Ulcerative colitis remains more common among White individuals compared to other races or ethnicities.