Fruit and vegetable consumption and the risk of type 2 diabetes: a systematic review and dose-response meta-analysis of prospective studies.

Although the test for non-linearity was not significant, P non-linearity =0.13, there was a marginally significant 9%–10% reduction in risk at an intake of 600–700 g/day compared with 0 g/day ( figure 3B , online supplemental table 6 ).

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Positive associations were observed with summary RRs of 1.18 (95% CI: 1.04 to 1.34, I 2 =0%, P heterogeneity =0.82) for cantaloupe, 1.13 (95% CI: 1.01 to 1.27, I 2 =66.4%, P heterogeneity =0.007) for fruit drinks, and borderline significant positive associations were observed with summary RRs of 1.08 (95% CI: 1.00 to 1.16, I 2 =68.7%, P heterogeneity =0.002) for fruit juice and 1.05 (95% CI: 1.00 to 1.11, I 2 =0%, P heterogeneity =0.72) for watermelon.

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