Nobody cares. No reason you should. Unless... * You get short of breath easily. * You have asthma. * You get a lot of colds, and they always seem to be worse than other people's and stay around longer. * You have COPD (emphysema, chronic bronchitis, whatever your doctor calls it). * You have liver disease and you were never a heavy drinker. * Somebody you love has these symptoms. In that case, you need more information. It can make a huge difference in your health. It might even save your life. You can check the links in these posts for lots more information. You can also email me; see the link above.