Is Air Pollution Associated with Increased Risk of Dementia? A Meta-Analysis of Epidemiological Research

Background: There are prevailing inconsistencies in epidemiological research about air pollution being a risk factor for dementia. Objective: We performed meta-analyses to calculate the pooled estimates of the risk of developing dementia due to air pollution exposure. Methods and Materials: ) from the beginning until December 2020. Meta-analysis was performed by adopting the random-effects model using Meta-XL. Results: , the results were found to be equivocal. Meta-analysis could not be performed in cognitive decline because of wide variations in assessments methods. Conclusions: as a possible risk factor for AD. These findings can be used for policy measures and further research.