Effect of Passive Smoking Exposure on Risk of Type 2 Diabetes: a Systematic Review and Meta-analysis of Prospective Cohort Studies
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Objective: The effect of passive smoking exposure on the risk of type 2 diabetes has not been systematically studied. A meta-analysis was conducted to assess the association between passive smoking exposure and the risk of diabetes.
Methods: We searched three major databases up to 31 October 2022 to identify relevant prospective cohort studies on the association between passive smoking and the risk of type 2 diabetes. The pooled relative risk (RR) and 95% confidence interval (CI) for the association between passive smoking exposure and the risk of type 2 diabetes were analyzed using a fixed-effect model.
Results: Ten prospective cohort studies were included in this meta-analysis, with a total of 251,620 participants involved. The pooled RR showed a significantly positive association between nonsmokers exposed to passive smoking and type 2 diabetes as compared to non-smokers who were not exposed to passive smoking [RR = 1.27; 95% CI (1.19, 1.36); p < 0.001]. Sensitivity analysis indicated that the pooled RR was not substantially affected by any of the individual studies.
Conclusion: Exposure to passive smoking increases the risk of type 2 diabetes. This study may have a positive effect on the prevention of type 2 diabetes.
Systematic Review Registration: https://www.crd.york.ac.uk/PROSPERO/, identifier CRD42023372532.
Social and Medical Determinants of Diabetes: A Time-Constrained Multiple Mediator Analysis.
Alemi F, Lee K, Vang J, Lee D, Schwartz M Cureus. 2023; 15(9):e46227.
PMID: 37905243 PMC: 10613532. DOI: 10.7759/cureus.46227.