A Meta-Analysis Study on Smoking and Male Pattern Hair Loss

This meta-analysis study, the first of its kind, examines the relationship between smoking and androgenetic alopecia (AGA) by synthesizing data from eight studies. The results indicate that ever smokers have a significantly higher likelihood of developing AGA compared to never smokers, with a pooled odds ratio (OR) of 1.82. Additionally, men who smoke at least 10 cigarettes per day have higher odds of developing AGA than those who smoke fewer, with a pooled OR of 1.96. Among men with AGA, ever smokers also show a higher likelihood of disease progression compared to never smokers, with a pooled OR of 1.27. However, no significant association was found between smoking intensity and disease progression. These findings highlight the need for increased awareness among patients about the impact of smoking on AGA development and progression, and they can inform future research and clinical guidelines.