Two-thirds of cancers are due to "bad luck," study finds

January 2, 2015 1:26 PM

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Two-thirds of cancers are due to "bad luck," study finds

Although about one-third of cancers can be linked to environmental factors or inherited genes, new research suggests the remaining two-thirds may be caused by random mutations.

These mutations take place when stem cells divide, according to the study by researchers at Johns Hopkins Kimmel Cancer Center. Stem cells regenerate and replace cells that die off. If stem cells make random mistakes and mutate during this cell division, cancer can develop. The more of these mistake...

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