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WHO MOVED MY PLASMA?

Transfusions can make mice more youthful. Can it work on humans?

BLOOD

IF YOU GIVE a mouse a cookie, he’s going to ask for a glass of milk. But if you give a mouse a transfusion of blood plasma from a much younger mouse, you can improve his cognitive and neurological functions—and reverse the effects of aging.

The scientific studies are fairly remarkable. In 2014, researchers at Stanford University demonstrated that infusion of young blood plasma in mice “is capable of rejuvenating synaptic plasticity and improving cognitive function.” In other words, blood can help keep mice young.

Can this work on humans? Jesse Karmazin, a 32-year-old physician and graduate of Stanford University’s medical school, says yes. Karmazin is the founder of Ambrosia LLC, a company charging adults $8,000 to be injected with blood plasma from young people (ages 16 to 25). It’s part of a clinical trial to test the anti-aging benefits of plasma transfusions. The trial passed ethical review, but to participate you have to be 35 or older and able to scrounge up $8,000.

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