Lay opinion vs evidence: Haarausfall Männer

Lay opinion often claims male hair loss is inherited solely from the mother's side. Evidence shows it is polygenic: many genes (AR, EDA2R, HDAC9) contribute, with androgen sensitivity (DHT) as key driver. Treatments like finasteride and minoxidil have moderate evidence from RCTs and Cochrane reviews, but finasteride carries risks (sexual dysfunction, depression). Consumer DNA tests may report risk variants, but single-SNP effects are small and not diagnostic. Evidence for androgenetic alopecia is human-strong (twin studies, GWAS), yet individual prediction remains limited. Safety note: always consult a doctor before using hormonal treatments.