The lungs are an essential respiratory organ, located on either side of the heart. Their main function is to transport oxygen from the atmosphere into the bloodstream and to release carbon dioxide from the bloodstream into the atmosphere.
The body’s cells need oxygen to work and grow. So it is important that we keep our lungs healthy.
The body has a natural defense system designed to protect the lungs. This works very well most of the time, keeping out dirt and fighting off germs.
However several harmful substances can damage the airways and threaten the lungs’ ability to work properly, which can lead to lung disease.