Lung Cancer is a disease of uncontrolled cell division in the tissues of the lungs. The cells continue to divide without any control and form tumours. The cellular growth may also invade adjacent tissues beyond the lungs.
Lung Cancer Symptoms
The lung is the most common cause of cancer-related deaths and is responsible for more than 1.3 million deaths worldwide annually.
The main causes of any lungs cancer include carcinogens ( such as those in cigarette smoke) ionizing radiation and viral infection. Smoking is the main cause of lungs cancer. The risk of lung cancer is significantly lower in the non-smokers. Cigarette smoke contains over the 50 known carcinogens.
Passive smoking (inhalation of smoke from another’s smoking) is also a cause of lungs cancer. The smoke from a burning end of a cigarette is more dangerous than the smoke from the filter end.
If a person stops smoking, the chance to develop cancer disease as damage to the lungs is repaired and contaminant particles are gradually removed.
Eliminating tobacco smoking is a primary goal in the prevention of lungs cancer. The World Health Organization has called the governments to stop tobacco advertising to prevent young people from taking up smoking.