Dracula knew about the benefits of young blood hundreds of years ago ...
So did Elizabeth Bathory.
I asked my kids, "How much do you love me and Mom?" while eyeballing the grandkids. Not that much, apparently.
Incidentally, my wife has commented on previous stories about the benefits of young plasma in regards to how Keith Richards keeps going. There was a biography done about the 'Stones, and transfusions were often part of Keith's tour routine, especially when he needed to kick burgeoning drug dependence.
I want to suck your blood :)