| Carbohydrate nutrition, glycemic index, and the 10-y incidence of cataract. | |
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MedLine Citation:
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PMID: 17991665 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Although dietary carbohydrates are thought to play a role in cataractogenesis, few epidemiologic studies have examined links between carbohydrate nutrition and cataract. OBJECTIVES: We investigated the associations between dietary glycemic index (GI), glycemic load (GL), total carbohydrate intake, and 10-y incident nuclear, cortical, and posterior subcapsular cataract. DESIGN: Of 3654 baseline participants in an Australian population aged >/=49 y (1992-1994), 933 were seen after 5 and/or 10 y, had completed a detailed semiquantitative food-frequency questionnaire, had no previous cataract surgery or baseline cataract, and had photographs taken to assess incident cataract with the Wisconsin Cataract Grading System. Dietary information was collected with a validated food questionnaire. GI was calculated from a customized database of Australian foods. GI, GL, and all other nutrients were energy adjusted. Hazard ratios (HRs) and 95% CIs were calculated with the use of discrete logistic models. RESULTS: After age, sex, diabetes, and other factors were controlled for, each SD increase in GI significantly predicted incident cortical cataract (HR: 1.19; 95% CI: 1.01, 1.39). Participants within the highest compared with the lowest quartile of GI were more likely to develop incident cortical cataract (HR: 1.77; 95% CI: 1.13, 2.78; P for trend = 0.035). These findings were similar after excluding participants with diabetes, although they were slightly attenuated and marginally nonsignificant (HR: 1.16; 95% CI: 0.98, 1.37, per SD increase in GI). No association was found between GI and nuclear or posterior subcapsular cataract and between GL or carbohydrate quantity and any cataract subtype. CONCLUSION: In an Australian cohort, poorer dietary carbohydrate quality, reflected by high GI, predicted incident cortical cataract. |
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Authors:
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Jennifer Tan; Jie Jin Wang; Victoria Flood; Shweta Kaushik; Alan Barclay; Jennie Brand-Miller; Paul Mitchell |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The American journal of clinical nutrition Volume: 86 ISSN: 0002-9165 ISO Abbreviation: Am. J. Clin. Nutr. Publication Date: 2007 Nov |
Date Detail:
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Created Date: 2007-11-09 Completed Date: 2007-12-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376027 Medline TA: Am J Clin Nutr Country: United States |
Other Details:
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Languages: eng Pagination: 1502-8 Citation Subset: AIM; IM |
Affiliation:
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Department of Ophthalmology, Centre for Vision Research, Westmead Millennium Institute, University of Sydney, Westmead Hospital, Sydney, Australia. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Australia / epidemiology Cataract / epidemiology* Dietary Carbohydrates / administration & dosage* Female Glycemic Index* Humans Incidence Male Middle Aged Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Dietary Carbohydrates |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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