Lung disease refers to disorders that affect the lungs, the organ that allow us to breathe.                 

• Asthma - Asthma is defined as a common, chronic respiratory condition that causes difficulty breathing due to contraction of the airways.
• Chronic Obstructive Pulmonary Disease (COPD) -  that cause breathlessness, or the inability to exhale normally.
• Chronic Bronchitis - Inflammation of airway, especially in the morning.
• Emphysema - Emphysema is a serious respiratory disease, which is another form of COPD. The most common cause is smoking. 
• Lung Cancer - This cancer is difficult to detect. Most often, the cancer develops in the main part of the lungs near the air sacs.
• Cystic Fibrosis/Bronchiectasis - A genetic respiratory disease caused by a defective gene that creates thick and sticky mucus that clogs up tubes and passageways.

• Trouble breathing
• Shortness of breath
• Feeling like you're not getting enough air
• Decreased ability to exercise
• A cough that won't go away
• Coughing up blood or mucus
• Pain or discomfort when breathing in or out

• Smoking. Smoke from cigarettes, cigars, and pipes is the number one cause of lung disease. Don't start smoking, or quit if you already smoke. If you live or work with a smoker, avoid secondhand smoke. Ask smokers to smoke outdoors. Secondhand smoke is especially bad for babies and young children.
• Radon. This colorless, odorless gas is present in many homes and is a recognized cause of lung cancer. 
• Asbestos. This is natural mineral fiber that is used in insulation, fireproofing materials, car brakes, and other products. Asbestos can give off small fibers that are too small to be seen and can be inhaled. Asbestos harms lung cells, causing lung scarring and lung cancer. It can cause mesothelioma which is a cancer that forms in the tissue covering the lungs and many other organs of the body.
• Air pollution. Recent studies suggest that some air pollutants like car exhaust may contribute to asthma, COPD, lung cancer, and other lung diseases.