This randomized controlled trial, published in the British Journal of Dermatology (2008, PMID: 18363752), evaluated the hormonal impact and treatment response of daily 1 mg finasteride in 270 males aged 14–58 with androgenetic alopecia (AGA), using the Hamilton-Norwood scale III–VI. Over 12 months, younger participants (≤26 years) with higher baseline
