We all know about the important function that our lungs perform i.e. absorption of oxygen into our blood and the expelling out of carbon dioxide into air. Lungs are a very critical organ of our body and lung cancer (or development of malignant cells in lungs) can really be life threatening.

Causes of lung cancer

Most people would know the primary cause of lung cancer (after all there is so much propaganda about what increases the risk of lung cancer the most). Yes, smoking tobacco is the main culprit behind lung cancer (or behind increasing the risk of lung cancer). Even passive smoking can slightly increase the risk of lung cancer. It