TLDR 5α-reductase inhibitors may increase the risk of depression and suicidal thoughts.
This study analyzed the mental health consequences of long-term use of 5α-reductase inhibitors in 93,197 men aged 66 or older in Ontario, Canada, from 2003 to 2013. It found no association between these inhibitors and an increase in suicide rates. However, there was a significant increase in the risks of self-harm and depression, particularly during the first 18 months of treatment. The study highlighted the need for healthcare providers to be more aware of the potential adverse effects of chronic medications and to counsel patients accordingly. The findings also raised questions about whether the observed mental health issues were due to the medication itself or the underlying condition being treated.
September 2025 in “Consilium Medicum” 5α-reductase inhibitors help manage symptoms of benign prostatic hyperplasia and may also prevent prostate cancer and treat hair loss.
12 citations
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November 2024 in “Plants” Phytosterols may help manage prostate issues but are less effective than synthetic drugs.
35 citations
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April 2013 in “Sexual medicine reviews” 5-alpha reductase inhibitors slightly increase the risk of sexual and mood side effects, and breast growth in men.
12 citations
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April 1995 in “Journal of Medicinal Chemistry” The new compounds moderately block a specific enzyme and strongly counteract a male hormone, suggesting potential for treating certain male-related health conditions.
71 citations
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November 2012 in “Expert Opinion on Drug Safety” 5-alpha reductase inhibitors can cause sexual side effects like erectile dysfunction and reduced sexual desire, sometimes lasting after stopping the drug.
11 citations
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December 2018 in “Assay and Drug Development Technologies” Natural herbal compounds might treat certain medical conditions by reducing DHT levels, but more research is needed to confirm their effectiveness and safety.