How does the global incidence of diverticulitis vary?

Updated: Aug 06, 2019
  • Author: Elie M Ghoulam, MD, MS; Chief Editor: BS Anand, MD  more...
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Diverticular disease occurs more frequently in Western countries but continues to increase worldwide. Why diverticular disease is less common in underdeveloped countries is unclear, but it is presumably secondary to lifestyle and dietary factors. For example, the prevalence of diverticulosis increased in Japan after its population adopted a more Western lifestyle. [19]

Diverticulitis involving the left colon typically affects false diverticula, which are also usually found in Western populations. Right-sided and cecal diverticulitis (involving true diverticula) are more prevalent in the Asian population, accounting for up to 75% of cases of diverticulitis in this group. [20]

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