My newspaper's health section included an article on biohacks to help you live longer.
One of the products listed was spermidine,a protein found in sperm (and elsewhere)that cleans out old cells while triggering the renewal of healthy cells. It's associated with reduced mortality from cardiovascular disease and increased overall lifespan. It seems to reduce inflammation and improve mitochondrial function.
Add that to other known properties of sperm; full of protein, rich in the antioxidant Selenium and it's alkaline so it combats heartburn and indigestion.
Why would any sane woman not want to give blowjobs?
:-)
AJ