Clinical Edge

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Smoking Impairs Cognition and Shrinks Brain Volume in MS

Key clinical point: Patients with MS who quit smoking tobacco may experience improved cognitive function.

Major finding: Former smokers with MS scored an average of 3.6 points lower on the Processing Speed Test than never smokers, and current smokers scored 5.9 points lower.

Study details: This cross-sectional study included 997 patients with MS who had cognitive function test scores and brain MRIs.

Disclosures: The study presenter reported having no relevant financial interests.


Alshehri E et al. ECTRIMS 2019. Abstract P461.