A clinical review of recent findings in the epidemiology of inflammatory bowel disease.

40 However, the findings did not reach statistical significance for CD and UC separately. 40 Another study has shown no effect of breast feeding on IBD development. 41 Interestingly, there may be a dose-response effect for breast feeding, with a recent case control study demonstrating a protective effect only after a duration of 3 months or more. 42 A separate recent study found a nonsignificant protective effect (OR 0.50, 95% CI 0.23–1.11) for a breast feeding duration of >6 months. 43 This may be one factor contributing to the conflicting data in the literature, as some studies did not take duration of breast feeding into account.

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