By Janine Hughes The lungs are the answer to the oxygen into the blood steam. They provide the channel through which fresh oxygen is taken into the blood stream and the carbon dioxide, a poisonous waste product, is eliminated, a process that cannot stop and one remains alive. The breathing process, however, allows several dangerous substances into the respiratory tissues, some of which are very dangerous. In order to keep lungs functioning properly, the lung function supplements are usually recommended. Respiratory diseases and malfunctions...