What Does a Drug That Extends Life In Mice Mean For Humans?

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From Time Magazine:

A natural compound, used as an immunosuppressant in organ-transplant patients, has been found to extend life in mice, according to a study published Wednesday by the journal Nature. Aging mice that were given the substance, rapamycin, lived significantly longer than mice that didn't get the drug: females that received rapamycin were 13% older at death, and males 9% older.

The research, conducted as part of the National Institute of Aging Interventions Testing Program, took place at three separate test sites and involved nearly 2,000 genetically similar mice. Trials began when mice were about 600 days old — well into middle age, at a stage roughly equivalent to 60-year-old humans.

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Update: Secret to a longer life lies on Easter Island -- The Independent