There is something you can do. Are you ready for this?? IF you smoke STOP!!!! Try to avoid people who smoke as well. I must say though that I had aunt that passed due to Lung cancer and she never smoked.
Lung cancer is an uncontrolled growth and spread of abnormal cells in the lungs. Two types of lung cancer, non small cell and small cell. Non small cell lung cancer grows and spreads slowly however small cell lung cancer grows more quickly and may lead to other organs of the body.
If you have any symptoms or desire to know more then please see your physician.