As fun family activities go, this one is pretty out there.
On April 3, the tech entrepreneur Bryan Johnson, 45, turns up at a health services clinic near Dallas with his 70-year-old father Richard and 17-year-old son Talmage. They arrive early in the morning, and, over the course of several hours, the men (and boy) engage in a tri-generational swapping of their blood plasma.
Talmage goes first, having a liter of his blood removed and converted via a machine into its piece parts—a batch of liquid plasma and then a batch of red blood cells, white blood cells and platelets. Bryan next undergoes the same process and then has an additional procedure in which his son’s plasma is fed into his own veins. Richard goes last and receives Bryan’s plasma after making room for the fluids by having his own blood drained.
