Smoking impairs cognitive function through the mediating effect of periodontitis in older adults.

IF 3.4 2区医学 Q2 PSYCHIATRY

BMC Psychiatry Pub Date : 2025-03-27 DOI:10.1186/s12888-025-06699-2

Xiaoqian Luan, Zhou Jin, Shenhang Xia, Jin Li, Yao An, Jiaqi Gao, Shengya Wang, Huwei Xia, Sipei Pan, Yao Zhang, Weihong Song, Yili Wu

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引用次数: 0

Abstract

Objectives: Evidence has shown that both smoking and periodontitis were linked to cognitive impairment. This study examines whether periodontitis mediates the effects of smoking status on cognitive function in older adults.

Methods: Using data from the National Health and Nutrition Examination Survey (NHANES) 2011-2014, the study included 1728 older participants who have data on smoking, serum cotinine, periodontal examination, and cognitive function. Mediation analysis was performed to test whether extent of periodontitis mediated associations between smoking status and cognitive function, adjusted for sociodemographic and basic health factors.

Results: Compared to never-smokers, daily smokers exhibited significantly worse global cognitive function, with periodontitis mediating this effect (effect= -0.16; 95% CI= -0.29, -0.05). Similarly, periodontitis mediated the association between serum cotinine levels and cognitive function in the total sample (effect= -0.02; 95% CI= -0.03, -0.00).

Conclusions: Periodontitis significantly mediates the impact of smoking on cognitive function. The findings highlight the potential roles of maintaining oral health and smoking cessation in mitigating cognitive decline.

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来源期刊

BMC Psychiatry 医学-精神病学

CiteScore

5.90

自引率

4.50%

发文量

716

审稿时长

3-6 weeks

期刊介绍： BMC Psychiatry is an open access, peer-reviewed journal that considers articles on all aspects of the prevention, diagnosis and management of psychiatric disorders, as well as related molecular genetics, pathophysiology, and epidemiology.