If you smoke, stop smoking. It's never too early to quit. Your risk of lung cancer drops dramatically the first year after you quit.
Try to avoid secondhand smoke.
Cancer Term:(malignant neoplasm) is a class of diseases in which a group of cells display uncontrolled growth, invasion that intrudes upon and destroys adjacent tissues, and sometimes metastasis, or spreading to other locations in the body via lymph or blood. These three malignant properties of cancers differentiate them from benign tumors, which do not invade or metastasize. Cancer-ar-foundation