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<p>Data relating to the total number of people diagnosed with irritable bowel syndrome
<ins class="ministerial">(IBS)</ins><del class="ministerial">(IBD)</del> in each of
the last five years is not collected.</p><p> </p><p><del class="ministerial">The two
main forms of IBD are Crohn’s disease and ulcerative colitis. Ulcerative colitis only
affects the large intestine whereas Crohn's disease affects the whole of the digestive
system.</del></p><p> </p><p>The National Institute for Health and Care Excellence
guidance indicates that <ins class="ministerial">IBS prevalence in the general population
is estimated to be between 10% and 20%. Recent trends indicate that there is also
a significant prevalence of IBS in older people.</ins> <del class="ministerial">ulcerative
colitis has an incidence in the United Kingdom of approximately 10 per 100,000 people
annually, and a prevalence of approximately 240 per 100,000. This amounts to around
146,000 people in the UK with a diagnosis of ulcerative colitis. In addition to this,
there are currently at least 115,000 people in the UK with Crohn's disease.</del></p>
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