Youthful blood has all the hallmarks of a vampire-esque solution to aging - but there may be some science behind it too.

Tony Wyss-Coray at Stanford University who infused older mice with the blood of younger animals and found that their brains became more plastic and malleable which enabled them to learn and remember information like their younger donors.

Bryan Johnson has moved away from using his son’s plasma and now advocates for Total Plasma Exchange therapy as a more advanced and credible longevity intervention. He no longer promotes family plasma transfusions, which were widely criticized, and instead frames plasma exchange as part of his broader anti-aging experiments.