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JOURNAL ARTICLE

Cigarette Smoking, Alcohol Consumption and Overweight in Multiple Sclerosis: Disability Progression

Wayra Citlali Paz-Ballesteros, Eric Alejandro Monterrubio-Flores, José de Jesús Flores-Rivera, Teresa Corona-Vázquez, Carlos Hernández-Girón
Archives of Medical Research 2017, 48 (1): 113-120
28577864

BACKGROUND: The rate at which disability progresses in multiple sclerosis (MS), and its severity, have been associated with modifiable lifestyle habits.

OBJECTIVE: To investigate the risk of disability progression in MS patients according to tobacco and alcohol consumption and to the presence of overweight.

METHODS: This was a follow-up of MS cases from a concluded case-control study (National Institute of Neurology and Neurosurgery, Mexico 2010-2013). The evolution in EDSS (Expanded Disability Scale Score) units was followed through a medical record review. Kaplan Meier statistics and multivariate Cox regression analysis were performed.

RESULTS: Of 181 cases, 63.5% were women and 82.5% had relapsing remitting MS. Study duration was 19.95 ± 15.24 months. The disease progressed faster in daily smokers than in non-smokers (p = 0.0168). In overweight patients, disability progressed faster than in normal weight patients (p = 0.0249). Ex-consumers of alcohol had lower risk of progression than current consumers (HR = 0.33 CI 95% = 0.14-0.83, p = 0.019) and both daily and ex-smokers presented higher risk of progression than non-smokers (HR = 2.32 CI 95% = 1.14-4.72, p = 0.020 and HR = 3.56, CI 95% = 1.21-10.46, p = 0.021). Stratifying by gender, the effects of smoking and overweight were only found in men.

CONCLUSIONS: Smoking is associated with rapid disability progression in MS. Our results suggest that cessation of tobacco and alcohol consumption could be clinically beneficial. Although there is association between overweight and disability progression in men, a further exploration of gender differences is necessary to corroborate this finding.

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