Lung cancer

• Reason: It has become a deadly disease, cancer, and even lung cancer is the main killer of other types of cancer. Or tumor cells, which grow in the lungs suffered by patients suffering from lung cancer. Cancer can grow in these tissues and can spread to other countries.
  
• The main reason is cigarette smoke contains many toxic substances absorbed in the lungs, which have accumulated over decades to cause mutations in cells of air cells and cause cancer.
  Another reason is radio active radiation and toxic chemicals, stress or genetics :

• Symptoms: cough, chest pain and shortness of breath, coughing up blood, fatigue and weight loss. But, as is the case in other types of cancer, and symptoms usually only visible when the cancer has spread or grow.
• Prevention and solution: avoid cigarettes and cigarette smoke are more calorie foods that contain more antioxidants to prevent cancer cells.

Because the lung disease, mainly due to tobacco smoke, then you must immediately stop this practice, and not trying to start for you who have not smoked. Also to avoid exposure to secondhand smoke is more dangerous than active smoking. I like the lung, and to avoid lung diseases, and you can breathe more freely.