Peter Attia· MD
PSA is a is a protein it exists to Aid in the liquefication of semen so it's produced by the prostate and if one were to um measure PSA in semen it would be very very high I always tell people if you looked at PSA in the semen it would be I don't know 100,000 nanog per milliliter of PSA in semen it's designed to be there and it exists there to ify the semen to help in the process of fertilization