On World Lung Day, doctors explain that the lungs can partly recover after years of smoking or exposure to pollution, though how much depends on how long and how heavily a person was exposed, their age and any existing lung disease. Quitting smoking is the single most important step, and benefits can begin soon after you stop, with better breathing, less cough and a lower risk of lung disease over time. Some damage, such as emphysema, cannot be reversed, which makes early action important. Avoid polluted air on high-pollution days, use a well-fitted mask when needed, keep indoor air clean, stay active, eat a balanced diet and get recommended vaccines. Breathing exercises can also help lung function. Do not ignore a long-lasting cough, breathlessness or wheezing, and get a lung function test if you are at risk.
