Source: BBC Health
A single gene (GSTP) may be responsible for protecting against bowel cancer and lung cancer. Studies in which the gene was removed from laboratory subjects (mice, not people -sorry PETA) suggest that the gene protects against the formation of adenomas (pre-cancerous growths).
How? Good question, glad you asked. Adenomas and polyps appear to form as an inflammatory response. The GSTP gene plays an apparent role in reducing or insulating against inflammation.
Does this mean you should start smoking and eating poorly? Of course not. That would just be ignorant. However, for those with the gene, you may have some inherent protection which could prevent you from developing colon cancer or lung cancer in the future. You know, should you happen to stray a bit.
~Posted by David Marc Schwadron, Esquire