91热爆

Findings published in the British scientific journal Nature suggest the lungs have an almost magical ability to repair the genetic damage caused by smoking, but only if you quit. The mutations that lead to cancer were considered to be permanent, and to persist even if after quitting. But UK researchers have now found out that the few healthy cells that escape damage can help the lungs recover. One of the lead authors, Dr Peter Campbell, spoke to 91热爆 Newsday.

(Photo: Smoked cigarette butt. Credit: Photofusion/Universal Images Group via Getty Images)