Vitamin D Status in Healthy Free-Living Elderly Men and Women Living in Quebec, Canada

被引:17
作者
Barake, Roula [1 ]
Weiler, Hope [1 ]
Payette, Helene [2 ,3 ]
Gray-Donald, Katherine [1 ]
机构
[1] McGill Univ, Sch Dietet & Human Nutr, Montreal, PQ H9X 3V9, Canada
[2] Univ Sherbrooke, Res Ctr Aging, Ctr Hlth & Social Serv, Sherbrooke, PQ J1K 2R1, Canada
[3] Univ Sherbrooke, Univ Inst Geriatr Sherbrooke, Sherbrooke, PQ J1K 2R1, Canada
关键词
PARATHYROID-HORMONE; D INSUFFICIENCY; D DEFICIENCY; D INADEQUACY; PLASMA; 25-HYDROXYVITAMIN-D; SUBTROPICAL CLIMATE; MULTIPLE-SCLEROSIS; OLDER POPULATION; BLOOD-PRESSURE; HEART-FAILURE;
D O I
10.1080/07315724.2010.10719813
中图分类号
R15 [营养卫生、食品卫生]; TS201 [基础科学];
学科分类号
100403 ;
摘要
Objective: To assess vitamin D status in relation to age, sex, season, adiposity, physical activity level, and supplement use in healthy elderly Canadians living in Quebec. Design: Cross-sectional survey. Setting: Data for 405 healthy free-living elderly Quebecers aged between 68 and 82 years with no major health problems were examined. Subjects: Men and women in age groups of 68-72, 73-77, and 78-82 years, in 2 seasons, participating in the NuAge cohort. Measurements: serum 25(OH)D assessed by radioimmunoassay (RIA), weight, height, smoking status, disease status, education, perception of income, Physical Activity Scale for the Elderly (PASE) questionnaire, and vitamin D supplement consumption. Results: The prevalence of vitamin D deficiency (25(OH)D <37.5 nmol/L) was 12.6% and 5.7% for men in winter and summer, and 8.7% and 1.9% for women, respectively. Over 50% of the participants had 25(OH)D concentrations <75 nmol/L. Correlates of vitamin D status by multiple regression analysis indicated that the vitamin D level in summer was 13.8 nmol/L higher for participants measured in winter and 17.2 nmol/L higher for those using supplements. Age, sex, body mass index, and physical activity were not associated with 25(OH)D concentration. Conclusion: Prevalence of vitamin D deficiency is low in healthy elderly men and women, especially in summer, but over 50% of the participants had suboptimal vitamin D concentrations. Vitamin D supplement consumption increased 25(OH)D concentrations substantially, particularly in the winter months, and should be encouraged.
引用
收藏
页码:25 / 30
页数:6
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