More people die of lung cancer in the United States than die of colon, prostate, breast, and kidney cancers combined. What surprises many people is that lung cancer is not necessarily caused by smoking. Many at risk groups and nonsmokers are also likely to develop the disease.
Some of the people who are the most at risk are United States veterans who served in the military between the Second World War and the Persian Gulf War. Recent studies indicate that this group has a 25% to 75% greater probability of developing lung cancer than people who didn't serve in the military during that time frame.



