Finasteride Improves Male Pattern Hair Loss in a Randomized Study in Identical Twins

January 2002 in “ PubMed ”

Dow Stough, Naveen G. Rao, Keith D. Kaufman, Colleen Mitchell

finasteride male pattern hair loss placebo clinical photographs hair counts patient self-assessments Propecia

TLDR Finasteride effectively treats male pattern hair loss without serious side effects.

This study on nine pairs of male identical twins demonstrated that finasteride 1 mg/day significantly improved hair growth and reduced hair loss progression over one year compared to placebo. Evaluations included clinical photographs, hair counts, and patient self-assessments, all showing superior results for the finasteride group (p < 0.05). No drug-related adverse events were reported, supporting finasteride's efficacy and safety in treating male pattern hair loss.

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Research cited in this study

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