Most people don’t know this, but there are about 200 different types of cancer that can attack the body so it’s easy to see why a large percentage of people will be affected by some form of cancer during their lifetime.

In men, the most common forms are lung, colon and prostate cancer with the survival rate varying among the different types.

Throughout the U.S and the rest of the world lung cancer is the leading cause of death among men, and in 2007 more than 200,000 men were diagnosed and began undergoing treatment for the disease.

In the same year, more than 160,000 lost their battle with the disease which is more than the number of deaths associated with colon and prostate cancer combined. So what causes lung cancer?