TLDR Finasteride and dutasteride reduce prostate cancer risk, but finasteride may increase higher-grade cancer risk.
The document discussed two major studies evaluating the impact of 5-alpha-reductase inhibitors on prostate cancer risk. The Prostate Cancer Prevention Trial focused on men with low baseline PSA levels and found that finasteride significantly reduced the risk of prostate cancer detection, although it was associated with an increased diagnosis of higher-grade disease. The REDUCE trial examined the effects of dutasteride in men with elevated PSA levels, showing a significant reduction in prostate cancer risk without a statistical increase in higher-risk disease compared to placebo.
408 citations
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May 2004 in “The Journal of clinical endocrinology and metabolism/Journal of clinical endocrinology & metabolism” Dutasteride more effectively lowers DHT levels in men with enlarged prostates than finasteride.
62 citations
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January 2004 in “PubMed” 5alpha-reductase inhibitors like finasteride and dutasteride effectively treat BPH by reducing DHT, offering symptom relief and potential future uses.
1707 citations
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December 2003 in “The New England Journal of Medicine” Combination therapy of doxazosin and finasteride safely and effectively reduces benign prostatic hyperplasia progression risk.
237 citations
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December 2001 in “Urology” Blocking the enzyme 5α-reductase can shrink the prostate and help treat enlarged prostate issues.
1054 citations
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February 1998 in “The New England Journal of Medicine” Finasteride reduces urinary issues and surgery need in men with enlarged prostates by over 50%.