Lower dairy products and calcium intake is associated with adverse retinal vascular changes in older adults

被引:10
|
作者
Gopinath, B. [1 ,2 ]
Flood, V. M. [3 ]
Wang, J. J. [1 ,2 ,4 ]
Burlutsky, G. [1 ,2 ]
Mitchell, P. [1 ,2 ]
机构
[1] Univ Sydney, Ctr Vis Res, Dept Ophthalmol, Sydney, NSW 2006, Australia
[2] Univ Sydney, Westmead Millennium Inst, Sydney, NSW 2006, Australia
[3] Univ Wollongong, Fac Hlth & Behav Sci, Sydney, NSW, Australia
[4] Univ Melbourne, Dept Ophthalmol, Ctr Eye Res Australia, Melbourne, Vic 3010, Australia
基金
英国医学研究理事会;
关键词
Blue Mountains Eye Study; Calcium; Dairy; Retinal vascular caliber; VESSEL DIAMETERS; QUESTIONNAIRE; CARBOHYDRATE; CONSUMPTION; POPULATION; NUTRITION; VALIDITY; MARKERS; CALIBER; DISEASE;
D O I
10.1016/j.numecd.2013.06.009
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background and aims: Higher consumption of dairy products and calcium is likely to play a role in maintaining optimal vascular health. In this study, we aimed to explore the associations between consumption of total-, regular- and low-fat dairy foods, and total calcium intake with retinal vascular caliber. Methods and results: 2813 Blue Mountains Eye Study participants aged 50+ years had dietary data collected using a semi-quantitative food frequency questionnaire, and serves of dairy consumption were calculated. Fundus photographs were taken and retinal vascular caliber measured using computer-assisted techniques and summarized. After adjusting for age, sex, body mass index, smoking, mean arterial blood pressure, serum glucose, white cell count, history of diagnosed hypertension, stroke and coronary heart disease, plus retinal arteriolar caliber, participants in the lowest quintile of total dairy consumption compared to those in the remaining highest 4 quintiles had significantly wider retinal venular caliber, 227.2 versus 224.7 mu m, respectively (multivariable-adjusted p = 0.002). Also, subjects in the lowest quintile of low-fat dairy product consumption versus those in the remaining quintiles of low-fat dairy intake had wider retinal venules (similar to 1.7 mu m, p = 0.03) and narrower retinal arterioles (similar to 1.4 mu m, p = 0.04). Participants in the lowest quintile versus highest quintile of total dietary calcium intake had similar to 2.3 mu m wider retinal venules (multivariable-adjusted p-trend = 0.02). Conclusions: A significant association was observed between lower intake of dairy products or calcium and adverse retinal vascular signs. We cannot discount the possibility of confounding from unmeasured risk factors; hence, further studies are warranted to confirm these findings. (C) 2013 Published by Elsevier B.V.
引用
收藏
页码:155 / 161
页数:7
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