A research study led by Michelle Turner, a graduate student at the University of Ottawa, found people who live in cities (i.e., Los Angeles) with high levels of air pollution but non-smokers have higher chances to die from lung cancer than people who live in cities with better air quality.
Researchers believe the fine particles in air pollution can hurt and irritate human lungs which later increase risk for lung cancer for a long run. This could lead to debate about air quality in cities, as researchers urged law makers must control air pollutions level to be as low as possible.
Using sample of 180,000 non-smokers, researchers noted that during duration of 26 years, 1,100 people died from lung cancer, as reported by reuters.com. All samples in the study lived in America.
Researchers applied ratio of 14 to 21 out of every 100,000 women who are non-smokers could get lung cancer. For non-smokers men, the ratio is 5 to 14 out of every 100,000 men.
The study was published early this month by American Journal of Respiratory and Critical Care Medicine.