The elite do blood transfusions to keep young there is a company called Ambrosia which does this research. it is pretty sickening if you ask me.
"Anyone seeking to practice parabiosis privately would quickly encounter the question of where to obtain sufficient quantities of young people's blood. But human blood isn't available for purchase to just anybody."
I posted this in the last thread but it was one of the last comments so it got lost.
link:
https:// .inc.com/jeff-bercovici/peter-thiel-young-blood.html