医学
萧条(经济学)
纵向研究
流行病学研究中心抑郁量表
维生素D与神经学
内科学
逻辑回归
老化
流行病学
前瞻性队列研究
抑郁症状
人口学
内分泌学
病理
经济
社会学
糖尿病
宏观经济学
作者
Éamon Laird,Aisling O’Halloran,Anne M. Molloy,Martin Healy,Belinda Hernández,Deirdre O’Connor,Rose Anne Kenny,Robert Briggs
标识
DOI:10.1017/s0007114521004748
摘要
Abstract This was a longitudinal study utilising the Irish Longitudinal Study on Ageing (n 3849 aged ≥ 50 years) and investigated the relationship between blood plasma folate and B 12 levels at baseline (wave 1) and incident depressive symptoms at 2 and 4 years (waves 2 and 3). A score ≥ 9 on the Center for Epidemiological Studies Depression Scale-8 at wave 2 or 3 was indicative of incident depressive symptoms. B 12 status profiles (pmol/l) were defined as < 185, deficient low; 185 to < 258, low normal; > 258–601, normal and > 601 high. Folate status profiles (nmol/l) were defined as ≤ 10·0, deficient low; > 10–23·0, low normal; > 23·0–45·0, normal; >45·0, high. Logistic regression models were used to analyse the longitudinal associations. Both B 12 and folate plasma concentrations were lower in the group with incident depressive symptoms v. non-depressed (folate: 21·4 v. 25·1 nmol/l; P = 0·0003; B 12 :315·7 v. 335·9 pmol/l; P = 0·0148). Regression models demonstrated that participants with deficient-low B 12 status at baseline had a significantly higher likelihood of incident depression 4 years later (OR 1·51, 95 % CI 1·01, 2·27, P = 0·043). This finding remained robust after controlling for relevant covariates. No associations of folate status with incident depression were observed. Older adults with deficient-low B 12 status had a 51 % increased likelihood of developing depressive symptoms over 4 years. The findings highlight the need to further explore the low-cost benefits of optimising vitamin B 12 status for depression in older adults.
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