Lung cancer here includes all cancers of the lower respiratory tract which is made up of the windpipe (trachea), the tubes it divides into (bronchi) and the lungs. A major cause is cigarette smoking, but there are some varieties of lung cancer that are not associated with smoking. Other risk factors are exposure to dust containing asbestos, iron oxides, chromium or radioactivity.
In 2002 Lung cancer caused 3.2% of deaths in people over 60 years old, 4.5% of all deaths in rich territories and 2.8% of all deaths in poor territories with reasonable life expectancy.
Global Burden of Disease estimated in 2002 Lung cancer to cause 2.4% of all Rich territory burden of disease.
Trachea, bronchus, lung cancers caused 2.2% of all deaths worldwide in 2002, an average of 200 deaths per million people per year and 17% of all deaths from cancer.