Study concludes that many cancers caused by bad luck in cell division

Researchers at Johns Hopkins University studied 31 different cancers. Of those, just nine were found to be linked to bad genetics or unhealthy lifestyle choices. The researchers did not consider breast cancer or prostate cancer in their study. The study concludes that the most common cause of the production of most cancerous cells occurs when one chemical letter in DNA is incorrectly swapped for another during stem cell division. Scientists found that cancer rates were higher in parts of the body where cells are quickest to regenerate, thereby creating more random mutations. http://www.foxnews.com/health/2015/01/02/study-concludes-that-many-cancers-caused-by-bad-luck-in-cell-division/