One such drug is rapamycin, a pill that is typically prescribed to patients ahead of organ transplants "to bring the immune system down," according to Dr. Andrea Maier, a longevity expert and internal medicine specialist.
Popular advocates for anti-aging like Dr. Peter Attia swear by rapamycin and its longevity effects — he has been taking the pill for years.
But of the use of off-label rapamycin for longevity, Maier says: "[it] might have potential, beneficial effects for the aging body of humans.
A 2014 study showed that rapamycin extended the lifespan of mice by more than 20%.
It's also been found to extend the lifespan of fruit flies and worms, but first caught the attention of researchers when it extended the lifespan of yeast.
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Andrea Maier, Peter Attia, rapamycin, Maier, It's
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The New York Times