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Dietary selenium intake and mortality in two population-based cohort studies of 133 957 Chinese men and women

  • Jiang-Wei Sun (a1) (a2), Xiao-Ou Shu (a3), Hong-Lan Li (a2), Wei Zhang (a2), Jing Gao (a2), Long-Gang Zhao (a2), Wei Zheng (a3) and Yong-Bing Xiang (a2)...

Abstract

Objective

To investigate the potential influence of dietary Se intake on mortality among Chinese populations.

Design

We prospectively evaluated all-cause, CVD and cancer mortality risks associated with dietary Se intake in participants of the Shanghai Women’s Health Study (SWHS) and the Shanghai Men’s Health study (SMHS). Dietary Se intake was assessed by validated FFQ during in-person interviews. Cox proportional hazards models were used to calculate hazard ratios (HR) and 95 % CI.

Setting

Urban city in China.

Subjects

Chinese adults (n 133 957).

Results

During an average follow-up of 13·90 years in the SWHS and 8·37 years in the SMHS, 5749 women and 4217 men died. The mean estimated dietary Se intake was 45·48 μg/d for women and 51·34 μg/d for men, respectively. Dietary Se intake was inversely associated with all-cause mortality and CVD mortality in both women and men, with respective HR for the highest compared with the lowest quintile being 0·79 (95 % CI 0·71, 0·88; P trend<0·0001) and 0·80 (95 % CI 0·66, 0·98; P trend=0·0268) for women, and 0·79 (95 % CI 0·70, 0·89; P trend=0·0001) and 0·66 (95 % CI 0·54, 0·82; P trend=0·0002) for men. No significant associations were observed for cancer mortality in both women and men. Results were similar in subgroup and sensitivity analyses.

Conclusions

Dietary Se intake was inversely associated with all-cause and cardiovascular mortality in both sexes, but not cancer mortality.

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Copyright

Corresponding author

* Corresponding author: Email ybxiang@shsci.org

References

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Dietary selenium intake and mortality in two population-based cohort studies of 133 957 Chinese men and women

  • Jiang-Wei Sun (a1) (a2), Xiao-Ou Shu (a3), Hong-Lan Li (a2), Wei Zhang (a2), Jing Gao (a2), Long-Gang Zhao (a2), Wei Zheng (a3) and Yong-Bing Xiang (a2)...

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