Finasteride works by inhibiting the enzyme 5α-reductase, specifically the type II isoenzyme. This enzyme converts testosterone to dihydrotestosterone (DHT), a potent androgen implicated in prostate growth and male pattern baldness. By blocking DHT production, finasteride reduces prostate size and slows hair loss.
Understanding the Risks
While generally well-tolerated, finasteride carries risks. The most common side effects are sexual dysfunction, including decreased libido, erectile dysfunction, and ejaculation disorders. These typically resolve upon cessation of treatment. However, a small percentage of men experience persistent sexual side effects, even after discontinuing finasteride, a condition known as Post-Finasteride Syndrome (PFS). The exact mechanism and prevalence of PFS remain subjects of ongoing research and debate, but studies suggest a possible link to altered hormone levels and neurological effects.
Other Potential Harms
Beyond sexual side effects, finasteride has been associated with depression, gynecomastia (breast enlargement), and reduced sperm count in some individuals. These adverse effects underscore the importance of thorough pre-treatment risk assessment and monitoring during therapy. Always discuss your medical history and potential risks with your doctor before starting finasteride.
Note: This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for personalized guidance regarding finasteride or any medication.
