期刊
DIABETES CARE
卷 32, 期 4, 页码 629-634出版社
AMER DIABETES ASSOC
DOI: 10.2337/dc08-1913
关键词
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资金
- National Institutes of Health [DK58845, CA87969, HL60712]
- Unilever Corporate Research
- American Heart Association Established Investigator Award
OBJECTIVE - The aim of this Study is to investigate the intake of zinc in relation to risk of type 2 diabetes in U.S. women. RESEARCH DESIGN AND METHODS - Dietary intakes of zinc and other nutrients were assessed and updated using a validated food frequency questionnaire from 1980 to 2002 among 82,297 women who were aged 33-60 years at baseline in 1980 and followed up to 2004 in the Nurses' Health Study. RESULTS - During the 24 years of follow-up, 6,030 incident cases of type 2 diabetes were ascertained. After adjustment of lifestyle and dietary risk factors, the relative risks (RRs) (95% Cl) of type 2 diabetes comparing the highest with the lowest quintiles were 0.90 (0.82-0.99) (P(trend) = 0.04) for total zinc intake and 0.92 (0.84-1.00) (P(trend) = 0.009) for dietary zinc intake from food sources, respectively. We further found an inverse association for dietary zinc to heme iron ratio. After multivariate adjustment of covariates, the RRs (95% Cl) across quintiles of this ratio were 1.0 (reference), 0.93 (0.86-1.01), 0.86 (0.79-0.94), 0.82 (0.75-0.90), and 0.72 (0.66-0.80), respectively (P(trend) < 0.0001). CONCLUSIONS - Higher zinc intake may be associated with a slightly lower risk of type 2 diabetes in women. More studies are warranted to confirm this association and to explore potential mechanisms.
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