Scientists: Random gene mutations -- 'bad luck' -- primary cause of most cancer
Ever marvel at someone who smoked and still lived to be 90? Just plain good luck, researchers say. And those who live like Puritans and get cancer anyway?
That's bad luck -- and it's the primary cause of most cancer cases, says a Johns Hopkins research study.
Roughly two-thirds of cancers in adults can be attributed to random mutations in genes capable of driving cancer growth, two scientists who ran statistics on cancer cases said.
That may sound jaw-dropping. And Johns Hopkins anticipates that the study will change the way people think about cancer risk factors.
They also believe it could also lead to changes in the funding of cancer studies.