Several vitamins and nutrients play a key role in maintaining healthy lung function. Vitamin C helps strengthen the body’s defences against respiratory infections, while vitamin D supports immune regulation within lung tissues. At the same time, vitamin A maintains the mucous membranes that line the airways, and vitamin E offers antioxidant protection to reduce cellular stress. To complement these, omega-3 fatty acids help calm inflammation and may ease symptoms such as chest congestion or chronic cough. Minerals like zinc, magnesium, and selenium also contribute by promoting proper lung cell function and supporting overall airway stability.