The third study found that a protein in the blood of young mice improved the ability of old ones
(comparable to a 70-year-old person) to exercise.
In two of the studies, giving the blood of young mice to old ones undid age-related impairments in the brain, reversing declines in learning and memory and boosting the creation of new neurons
and the ability of the brain to change its structure in response to experience.
Rubin and Wagers each expect to test GDF11 in people within three to five years.
Stanford’s Wyss-Coray
believes strongly enough in the therapeutic possibilities of young blood
that he co-founded a company, Alkahest, to test its effect in humans.
“Alkahest” is the name medieval alchemists gave to
a hypothetical substance that would act as an “immortal liquor”.
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