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Published on: April 19, 2013
Inverse association between fruit juice consumption and type 2 diabetes among individuals with high genetic risk on
Tomoki Kawahara1, Nobutoshi Nawa1, Isao Oze2
1Department of Public Health, Institute of Science Tokyo, Bunkyō, Japan.
Abstract:
Previous studies on the association between fruit juice consumption and type 2 diabetes remain controversial, which might be due to heterogeneity in the polygenic risk score (PRS) for type 2 diabetes. We examined the association between fruit juice and type 2 diabetes by PRS for type 2 diabetes. We investigated whether fruit juice influences type 2 diabetes risk differently among individuals with varying genetic risks. Data from the Japan Multi-Institutional Collaborative Cohort (J-MICC) study, a cross-sectional study of 13 769 Japanese individuals was used for our analysis. The primary exposure was the frequency of fruit juice, categorised as do not drink, less than 1 cup per day or more than 1 cup per day. We selected PGS002379, a PRS for type 2 diabetes developed using East Asian populations. The primary outcome was physician-diagnosed type 2 diabetes, reported by participants. The consumption of fruit juice was significantly inversely associated with type 2 diabetes in the group with a high PRS for type 2 diabetes (OR: 0·78, 95 % CI: 0·65, 0·93 for < 1 cup/d and OR: 0·54, 95 % CI: 0·30, 0·96 for > 1/d), but this association was not observed in the low PRS group. Fruit juice consumption was inversely associated with type 2 diabetes, especially in genetically high-risk populations for type 2 diabetes.
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