These researchers — part of a burgeoning field called “geroscience” — aren’t seeking immortality. The focus is much more pragmatic: By addressing the root causes of aging, they hope to stave off the disability and diseases that can make old age so miserable. They want to help people feel healthy for longer, compressing the years of illness that often accompany old age into a much shorter time frame. “Let’s build a medicine that would be safe enough for someone in midlife to take almost like a supplement, like a daily vitamin, but with much more profound biological effects,” says James Peyer, CEO of Cambrian Bio in New York City.
Though there are no proven therapies for people yet, geroscientists are eyeing several compounds that can slow the aging process, at least in worms, fruit flies and mice. Some have already been tested in humans, and many more clinical trials are under way.
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Perhaps the best studied is rapamycin, a compound first discovered in a soil sample collected in 1964 from Rapa Nui, or Easter Island. Today, people who receive organ transplants take the drug to help keep their immune systems from rejecting the foreign tissue. But rapamycin also prolongs life in yeast, flies and mice. And it’s being tested in people in clinical trials.
