>>18482102
>at least we know how these meds work
>these are all symptoms of having low/no primary sex hormones btw
finasteride and dutasteride lowers serum dht by 95% (castration levels)
dht is responsible for male reproductive growth and it's reasonable to say drastically altering it in adulthood probably changes the penis' size.
penis shrinkage is observed in animal trials.
finasteride is known to shrink the prostate (also part of the male reproductive system with tissue similarities) by 20%.
so it is most likely finasteride / dutasteride shrink the penis.