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Abstract Title:

Vitamin E and risk of age-related cataract: a meta-analysis.

Abstract Source:

Public Health Nutr. 2015 Oct ;18(15):2804-14. Epub 2015 Jan 16. PMID: 25591715

Abstract Author(s):

Yufei Zhang, Wenjie Jiang, Zhutian Xie, Wenlong Wu, Dongfeng Zhang

Article Affiliation:

Yufei Zhang

Abstract:

OBJECTIVE: We conducted a meta-analysis to evaluate the relationship between vitamin E and age-related cataract (ARC).

DESIGN: The fixed- or random-effect model was selected based on heterogeneity. Meta-regression was used to explore potential sources of between-study heterogeneity. Publication bias was evaluated using Begg's test. The dose-response relationship was assessed by a restricted cubic spline model.

SETTING: Relevant studies were identified by a search of PubMed and the Cochrane Library to May 2014, without language restrictions.

SUBJECTS: Studies involved samples of people of all ages.

RESULTS: Dietary vitamin E intake, dietary and supplemental vitamin E intake, and high serum tocopherol levels were significantly associated with decreased risk of ARC, the pooled relative risk was 0·73 (95% CI 0·58, 0·92), 0·86 (95% CI 0·75, 0·99) and 0·77 (95% CI 0·66, 0·91), respectively. Supplemental vitamin E intake was non-significantly associated with ARC risk (relative risk=0·92; 95% CI 0·78, 1·07). The findings from dose-response analysis showed evidence of a non-linear association between dietary vitamin E intake and ARC. The risk of ARC decreased with dietary vitamin E intake from 7 mg/d (relative risk=0·94; 95% CI 0·90, 0·97).

CONCLUSIONS: The findings of the meta-analysis indicated that dietary vitamin E intake, dietary and supplemental vitamin E intake, and high level of serum tocopherol might be significantly associated with reduced ARC risk.

Study Type : Meta Analysis

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Sayer Ji
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