Epidemiology of Ulcerative Colitis in South Asia

population of the Indian sub-continent is not uniform unlike Japan, China, or Korea as it is a mixture of Caucasian population in the northern part, Mongoloid in the Eastern region and Dravidian in the Southern part of the region. To understand the variability of IBD in India amongst different ethnic and cultural groups, it is better to view it as a small continent rather than a large country. A unique feature of the sub-continent has been the large scale migration of population which occurred from the northern and eastern parts of the subcontinent to Britain and subsequently North America shortly after the end of the Second World War. Today, Britain, Canada, and USA have a sizeable migrant population from India, Bangladesh, and Pakistan. Disease in the migrant population in these countries has given considerable insight into the epidemiology of the group of diseases referred collectively to as IBD.