Why some ex-smokers develop lung cancer and some don’t
November 30th, 2008
The risk of developing lung cancer might be tied to genes, says the team.
Cigarette smoke exposure has been shown to activate genes that promote cancer and deactivate genes that stop tumour growth.
They found that alteration in DNA methylation, a vital process, which regulates gene expression during normal development, might explain why former smokers develop lung cancer.