Sperm May hold Key to Cancer, Study Suggests

03/28/2008 02:43 am 02:43:03 | Updated May 25, 2011

The evolutionary path that separated humans from chimps 5 million years ago may have made human sperm survive better but paradoxically may have made humans prone to cancer.

A comparison of chimpanzee genes to human genes shows a concentration of genes unique to people in areas associated with sperm production and cancer, and suggests the changes that make humans unique also make us uniquely prone to cancer.

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