London: Smoker's Face -- a condition where smokers look older than they are, is just one of many negative effects caused by heavy tobacco usage, researchers have warned.

"We searched across thousands of traits to identify those that may be affected by how heavily someone smokes. As well as identifying several known adverse effects such as on lung health, we also identified an adverse effect of heavier smoking on facial aging," said study author Louise Millard from the University of Bristol in UK.