More cancers occur by random chance than for any other reason, researchers say

Two-thirds of all cancers are caused by DNA replication errors, according to Johns Hopkins researchers. But don't light a celebratory cigarette just yet.

 

A cancer patient. Getty Images.

We usually attribute cancer to inherited genes such as the BRACA1 or BRACA2 mutations, responsible for breast, ovarian, and prostate cancer. Or else, a lifestyle choice like smoking or something to do with the environment, say exposure to pollution or radiation. A new study published in the journal Science however, makes a strong case for random chance as the biggest driver.

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