Genetic adult lactase persistence is associated with risk of Crohn's Disease in a New Zealand population.

Similarly a highly significant correlation between incidence of CD and lactase persistence (r = -0.655, p = 0.0017) was reported in an observational study encompassing data from 20 countries [ 19 ], whilst Shrier et al [ 20 ] reported a reduction in CD risk with increasing prevalence of lactase non-persistence in a review of global population data.

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