If you kill p16 expressing "senescent" cells, then mice live 25% longer. http://dx.doi.org/10.1038/nature16932 … and http://www.nature.com/news/destroying-worn-out-cells-makes-mice-live-longer-1.19287#antiaging effects

Is the increased longevity effect due to true anti-aging or to just killing cancer cells that express p16ink4a, but still proliferate? There is some improvement to kidney and heart function, but enough to increase lifespan? Or is it just the anti-cancer effect?
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