Lung damage refers to harm or injury to the lungs, which can affect their ability to function properly. This damage can result from various factors, including exposure to air pollution, smoking, or toxic chemicals. Conditions like asthma, chronic obstructive pulmonary disease (COPD), and pneumonia can also lead to lung damage, causing symptoms such as shortness of breath and persistent cough. When lung tissue is damaged, it may become inflamed or scarred, reducing oxygen exchange in the body. Early detection and treatment are crucial to prevent further complications. Maintaining a healthy lifestyle and avoiding harmful substances can help protect lung health.