How much is cancer really in our control, in terms of changing risk factors?
Cancer is a complicated disease. We’re born with a certain number of genetic aberrations that can lead to the disease, and we also pick up some from how we live or what kinds of things we are exposed to. But there’s also another way we acquire DNA changes: simply by having another birthday and living longer. As we age, and our cells continue to divide, they’re more prone to making genetic mistakes when they copy our genome. Some of those mistakes can lead to tumors. But how many cancers fall into the second camp—the ones caused by things we are exposed to in this lifetime?
Researchers from Johns Hopkins caused a furor in 2015 when they determined that well over half—65%—of cancers are actually traceable to random mutations and therefore mostly beyond our control. Now a new study adds to those findings. In a report published in JAMA Oncology, a team led by Mingyang Song, a research fellow at the Massachusetts General Hospital and Harvard T. H. Chan School of Public Health, studied more than 135,000 men and women and determined that lifestyle factors, like diet, smoking and exercise, account for 20% to 40% of cancer risk.
Read Full Article: Can Most Cancer Really Be Prevented? | TIME
|Read Full Article: Can Most Cancer Really Be Prevented? | TIME|