I have read that DHT is crucial to muscle growth and building muscle. If I am an athlete who is just out of college and taking Propecia, will using the drug effect my ability to gain strength and mass? Thanks.

Dihydrotestosterone (DHT) is a male hormone, so I would expect that it might have some impact on muscle mass. Propecia blocks DHT and causes a rise in systemic testosterone by about 18%, so maybe there is an effect on muscle mass building stemming from an increased testosterone level, which is a much stronger male hormone than DHT. So indirectly, Propecia might be positive for muscle building if DHT levels go down (from the Propecia) and testosterone levels go up to compensate. Everyone is different, so I couldn’t say what is actually impacting muscle mass.

Lately, the big focus here has been that Propecia (finasteride 1mg) masks the blood measurements for other steroids when used in athletes, which is why finasteride is on the list of drugs banned for professional athletes.

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