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Abstract Title:

Effects of long-term exposure to air pollution on the incidence of type 2 diabetes mellitus: a meta-analysis of cohort studies.

Abstract Source:

Environ Sci Pollut Res Int. 2020 Jan ;27(1):798-811. Epub 2019 Dec 6. PMID: 31811609

Abstract Author(s):

Mei Yang, Han Cheng, Chaowei Shen, Jie Liu, Hongkai Zhang, Jiyu Cao, Rui Ding

Article Affiliation:

Mei Yang

Abstract:

This meta-analysis aimed to comprehensively assess the effects of long-term air pollution exposure on the risk of type 2 diabetes mellitus (T2DM). Studies were selected from three electronic databases. Random- or fixed-effect model was used to obtain the pooled hazard ratios (HRs) and corresponding 95% confidential intervals (CIs). Stratified analyses by regions of the studies and length of follow-up were conducted to assess the effects in different subgroups. Sensitivity analyses by omitted studies one by one, as well as adjusting certain confounding factors, were also conducted. The search resulted in 1878 studies, among which 16 studies with 18 cohorts were included. The incidence of T2DM was significantly associated with 10μg/mincrease of PM(overall HR = 1.11, 95% CI: 1.03, 1.19) and PM(overall HR = 1.12, 95% CI: 1.01, 1.23) exposure. Stratified analyses confirmed that PMwas significantly associated with increased T2DM incidence in American countries but not European countries. The results in the long follow-up subgroup also confirmed that exposure of PMand PMwas associated with increased T2DM incidence. Interestingly, educational level and gender could potentially affect the impacts of PMand PMon T2DM incidence. The findings show long-term exposure to PM, and PMcould significantly increase the incidence of T2DM, especially in cohorts with long follow-up time.

Study Type : Human Study

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