[Steve Van Doorn]

I knew this was the case for decades. Though I could never find a report on it.
This site talks about it ALL the time as they make a profit selling testosterone boosters

phosphatidylserine (PS) also increases testosterone
This is an ad but it's relevant to this thread.

From their ad which is true:
"dramatically increasing your capacity for learning and retaining new information...and adding a new weapon to your stress-busting arsenal...then it's time you learn about phosphatidylserine (PS)"
https://www.bitchute.com/video/5uQrmbkSdwKZ/

My note on the ad: "dramatically increasing your capacity for learning"
would be relative to how much of a learning disability you have (IE: libtard)

[Steve Van Doorn]

BTW - for anyone that wants to raise your testosterone which is low in most men today AND women. Magnesium helps build testosterone which nearly everyone is low on.