October 2015 in “Digital Library of Theses and Dissertations (Universidade de São Paulo)” Finasteride reduces prostate size and PSA levels in young men with hair loss.
October 2025 in “International Journal of Social health” Finasteride lowers PSA levels and prostate size, requiring adjusted PSA interpretation for accurate cancer screening.
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January 2000 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Antiandrogen drugs can reduce PSA levels in women with excess hair, suggesting PSA is a sign of male hormone activity in women.
March 2009 in “The Journal of Urology” Low dose finasteride causes only minor changes in PSA levels in men over 50 with BPH.
April 2007 in “Nature Clinical Practice Urology” Finasteride lowers PSA levels about the same whether taken at 1 mg or 5 mg daily.