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Editorial
November 3, 2015

Evolutionary Adaptations to Risk of CancerEvidence From Cancer Resistance in Elephants

Author Affiliations
  • 1Centre for Evolution and Cancer, Institute of Cancer Research, London, England
JAMA. 2015;314(17):1806-1807. doi:10.1001/jama.2015.13153

Paradoxes can be intellectually challenging and illuminating. The eponymous Peto paradox originated approximately 40 years ago when Peto, along with his colleagues Doll and Cairns, highlighted the observation that cancer risk does not appear to scale with size in the animal kingdom.1,2 The underlying premise was that more cell division (to make and sustain a larger animal) along with longer life span might be expected to carry a proportionally greater mutational and malignancy risk.

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