(CNN)-- 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? <\/p>\n
That's bad luck -- and it's the primary cause of most cancer cases, says a Johns Hopkins Medicine research study. <\/p>\n
Roughly two-thirds of cancers in adults can be attributed to random mutations in genes capable of driving cancer growth, said two scientists who ran statistics on cancer cases. <\/p>\n
That may sound jaw-dropping. And Johns Hopkins anticipates that the study will change the way people think about cancer risk factors. <\/p>\n
They also believe it could lead to changes in the funding of cancer studies, with a greater focus on finding ways to detect those cancers attributed to random mutations in genes at early, curable stages. <\/p>\n
Smoking can still kill you <\/p>\n
But, no, that's not permission to smoke or to not use sunblock. <\/p>\n
Some forms of cancer are exceptions, where lifestyle and environment play a big role. Lung cancer is one of them. So is skin cancer. <\/p>\n
And, if cancer runs in your family, this unfortunately doesn't mean you're in the clear. Some cancers are more strongly influenced by genetic heritage than others. <\/p>\n
\"The remaining third (of cancer cases) are due to environmental factors and inherited genes,\" the Kimmel Cancer Center said in a statement on the study published Friday in the magazine Science. <\/p>\n
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More here: (CNN)-- Ever marvel at someone who smoked and still lived to be 90? Continue reading
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