March 2008 in “International Society of Hair Restoration Surgery” Smoking 20+ cigarettes daily increases the risk of severe hair loss in men.
January 2024 in “Zenodo (CERN European Organization for Nuclear Research)” The conclusion is that certain traits, including perceived facial aging and BMI, are linked to perceived youthfulness differently in men and women.
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September 2020 in “Journal of Cosmetic Dermatology” Smoking increases early hair loss risk in men; quitting may help prevent it.
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November 2007 in “Archives of Dermatology” Smoking linked to hair loss in Asian men.
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January 1987 in “Harvard University Press eBooks” Maintain health with exercise, good nutrition, and avoid harmful substances.