Air pollution increases risk of lung cancer, heart disease
NIEHS-funded researchers demonstrated that years of exposure to high concentrations of tiny particles of soot and dust from cars, power plants, and factories can increase a person's risk of dying from lung cancer and heart disease to a level that is comparable to the risk associated with prolonged exposure to secondhand tobacco smoke.
Smoking alters youthful DNA to increase lung cancer later in life
Early smoking may alter a young person's DNA, possibly increasing the risk of lung cancer years later, even after the smoker quits, researchers found.
Asbestos exposure linked to lung tumors, mesotheliomas
Researchers linked asbestos exposure to an increased incidence of lung tumors and mesotheliomas, and found that asbestos-exposed workers who smoke cigarettes have a risk of lung cancer more than ten times as great as asbestos-exposed individuals who do not smoke.