期刊
EPIDEMIOLOGIC REVIEWS
卷 35, 期 -, 页码 98-111出版社
OXFORD UNIV PRESS INC
DOI: 10.1093/epirev/mxs001
关键词
biological aging; review; systematic; socioeconomic status; telomere length
资金
- Medical Research Council
- Chief Scientist Office [SPHSU2] Funding Source: researchfish
- Economic and Social Research Council [ES/H029745/1] Funding Source: researchfish
- Medical Research Council [MC_UU_12017/5, MC_UU_12017/7, MC_UP_A540_1021, MC_U130059823, MC_U130059821] Funding Source: researchfish
- ESRC [ES/H029745/1] Funding Source: UKRI
- MRC [MC_U130059823, MC_UP_A540_1021, MC_UU_12017/5, MC_U130059821, MC_UU_12017/7] Funding Source: UKRI
It has been hypothesized that one way in which lower socioeconomic status (SES) affects health is by increasing the rate of biological aging. A widely used marker of biological aging is telomere length. Telomeres are structures at the ends of chromosomes that erode with increasing cell proliferation and genetic damage. We aimed to identify, through systematic review and meta-analysis, whether lower SES (greater deprivation) is associated with shorter telomeres. Thirty-one articles, including 29 study populations, were identified. We conducted 3 meta-analyses to compare the telomere lengths of persons of high and low SES with regard to contemporaneous SES (12 study populations from 10 individual articles), education (15 study populations from 14 articles), and childhood SES (2 study populations from 2 articles). For education, there was a significant difference in telomere length between persons of high and low SES in a random-effects model (standardized mean difference (SMD) = 0.060, 95% confidence interval (Cl): 0.002, 0.118; P= 0.042), although a range of sensitivity analyses weakened this association. There was no evidence for an association between telomere length and contemporaneous SES (SMD = 0.104, 95% Cl: -0.027, 0.236; P=0.119) or childhood SES (SMD = -0.037, 95% Cl: -0.143, 0.069; P=0.491). These results suggest weak evidence for an association between SES (as measured by education) and biological aging (as measured by telomere length), although there was a lack of consistent findings across the SES measures investigated here.
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