The use of aspirin and other nonsteroidal anti-inflammatory drugs significantly reduces the risk for cancer, but no one has been able to explain why. Now researchers have found that these drugs slow the accumulation of a type of DNA change called somatic genome abnormalities, or S.G.A.’s, that lead to uncontrolled cell growth.
http://well.blogs.nytimes.com/2013/07/05/how-aspirin-might-stem-cancer/
How Aspirin Might Stem Cancer