the mortality rate plateau presents the intriguing possibility that improving health is possible at any age. And we are just starting to understand just how malleable lifespan—and healthspan—might be.



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2. J. W. Curtsinger, H. H. Fukui, D. R. Townsend, and J. W. Vaupel. Demography of genotypes: Failure of the limited life span paradigm in Drosophila melanogaster. Science 258(1992):461-463.

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