Smokers may have more or earlier hair loss
https://onlinelibrary.wiley.com/doi/10.1111/jocd.13727
Results
The majority of smokers (425) had a form of AGA, while only (200) nonsmokers had a degree of AGA (P < .01). Of the smokers group, 235 (47%) had grade III AGA and 120 subjects (24%) had grade IV AGA. In the nonsmokers group, 100 subjects (20%) had grade II AGA and 50 subjects (10%) had either grade III or IV AGA.
Conclusion
The prevalence of AGA among smokers was statistically higher than among nonsmokers, while severity of AGA was not associated with the intensity of smoking. Nicotine and its derivative cotinine might be responsible for accelerating AGA progress pending further validation.
Dr. Rassman’s Comments: This is a fascinating study strongly suggesting that smoking (possibly nicotine) accelerates male pattern balding, in those who I suspect in those who have a genetic predisposition for it.
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