Health and Science: Mutations Between Species Reveal Keys to Aging

  • James Gallagher
  • Health and Science Correspondent

man and dog

photo credit, Getty Images

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A study shows that dogs’ DNA mutates five times faster than their owners’ genetic code.

According to the study, the lifespan of animals is related to the rate at which their genetic code mutates.

The researchers found that mammals – from tigers to humans – have about the same number of mutations by the time they die of old age.

But short-lived animals tend to run out of their excretions faster, according to an analysis of 16 species.

The discovery helps explain why we age and sheds light on one of the most complex mysteries of cancer, the researchers say.

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