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[–] 7559501? ago 

Although the action mechanism is still unclear, previous animal studies have suggested that PSO may inhibit 5α-reductase, which produces DHT from testosterone [11, 12, 26].

Oh, yeah, I see what you're saying now.

In addition, DHT and prostate specific antigen (PSA) levels were not measured for identification of mechanism of PSO; therefore we could not explain the exact action of PSO on AGA patients.

Unfortunately, they did not measure DHT. Huh.