A new pack of anti-aging companies like Unity Biotech, Cleara Biotech, and Oisín Biotechnologies think there’s a connection between so-called senescent cells—those that no longer divide—and the effects of growing old.

Clear out cells that have gone into this sleeplike state, the thinking goes, and youthful vigor will return. But not much has been known about how these cells affect the brain. 

Now scientists who have taken a careful look at the brains of mice think senescent cells could have a role in neurodegeneration and memory loss.

In the new study, senior author Darren Baker of the Mayo Clinic in Minnesota found that if researchers removed senescent cells or prevented them from building up, they could prevent brain degeneration in mice prone to it.

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