Reason #981,132 Never to Smoke Cigarettes

Cigarette smoke can turn normal breast cells cancerous by blocking their ability to repair themselves, eventually triggering tumor development, University of Florida scientists report. While some cells nonetheless rally and are able to fix their damaged DNA, many others become unable to access their own cellular first aid kit, according to findings from a UF study published today (Aug. 21) in the journal Oncogene. If they survive long enough to divide and multiply, they pass along their mutations, acquiring malignant properties.