The appearance of IBD varies widely with higher incidences in well-industrialized countries compared to industrializing and developing countries. A striking north-south and west-east gradient in IBD incidences can be observed. Overall the global incidence of IBD is still rising. The time of onset of CD shows two peaks (15–20 and 50–70 years) whereas the onset of UC is usually seen in the youth, affecting both sexes equally.
KeywordsEpidemiology Incidence Prevalence North-south gradient Westernizing lifestyle Disease onset
Further Media of Interest
- Comprehensive course on IBD epidemiology and pathology by KhanAkademie/American Association of Colleges of Nursing: https://www.youtube.com/watch?v=Ueqs7pl5OAY.
- Epidemiological Committee (EpiCom) of the European Crohn’s and Colitis organization (ECCO): https://www.ecco-ibd.eu/about-ecco/ecco-operational-board/epicom.html.
- Ye Y et al (2015) The epidemiology and risk factors of inflammatory bowel disease. Int J Exp Med 8(12):22529–22542Google Scholar