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Published on: 7/15/2026

Does finasteride affect testosterone or make me less ‘manly’?

Yoshinori Abe

Reviewed by Yoshinori Abe, MD

Internal Medicine

Finasteride does influence hormone activity, but it does not lower overall testosterone or make you less "manly." The medication works by blocking the enzyme 5-alpha reductase, which converts testosterone into dihydrotestosterone (DHT). As a result, DHT levels drop while total testosterone typically stays the same or rises slightly. Because DHT—not testosterone—is the main driver of male-pattern hair loss and prostate enlargement, finasteride is effective for these conditions without reducing masculinity. Some men do report side effects such as changes in libido or mood, but these are not universal and often resolve after stopping the medication.

If you're considering finasteride, experiencing hair loss, or noticing symptoms you're unsure about, the smartest first step is understanding what's actually happening in your body. A free, instant, online symptom check can help you clarify your concerns, identify possible causes, and guide you toward the right next steps—whether that's a conversation with your doctor or simply peace of mind. It takes just a few minutes, requires no signup, and gives you personalized insights based on your unique symptoms.

Reviewed for medical accuracy: 07/15/2026

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Important Next Steps

Discover finasteride’s effects on testosterone levelsLearn if finasteride impacts your hormonesSee if finasteride could affect your symptomsFind OTC relief for finasteride side effectsFind a doctor for finasteride concernsDiscover home remedies for finasteride side effectsUnderstand if finasteride symptoms need care today

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Explanation

Finasteride is a medication that can influence testosterone levels in the body. According to the studies provided, finasteride works by blocking the conversion of testosterone into another hormone called dihydrotestosterone (DHT). This can lead to a slight increase in testosterone levels in the bloodstream.

  1. Testosterone Effects: Finasteride does not significantly lower testosterone levels; instead, it may cause a slight increase. This is because it stops testosterone from turning into DHT, which is linked to hair loss and prostate growth.

  2. Masculinity Concerns: There is no evidence from the provided studies that finasteride makes someone less 'manly'. Masculinity involves many factors, including hormones, but also personal identity and social roles.

In summary, while finasteride can change hormone levels slightly, it does not make someone less masculine. If you have concerns about taking finasteride or are experiencing any unusual symptoms, you can use a free symptom checker to help assess your situation before discussing them with a healthcare provider.

(References)

  • Roehrborn CG, Lee M, Meehan A, Waldstreicher J, & PLESS Study Group. (2003). Effects of finasteride on serum testosterone and body mass .... Urology, 14624915.

  • Jung JY, Yeon JH, Choi JW, Kwon SH, Kim BJ, Youn SW, et al. (2014). Effect of dutasteride 0.5 mg/d in men with androgenetic .... International journal of dermatology, 24898559.

  • Kunelius P, Lukkarinen O, Hannuksela ML, Itkonen O, & Tapanainen JS. (2002). The effects of transdermal dihydrotestosterone in the aging .... The Journal of clinical endocrinology and metabolism, 11932266.

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