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What Is It?Acute bronchitis is an inflammation of the lining of the bronchial tubes, the hollow air passages that connect the lungs to the windpipe (trachea). The inflammation can be caused by an infection or by other factors that irritate the airways, such as cigarette smoking, allergies and exposure to fumes from some chemicals. Acute bronchitis caused by an infection usually starts with an upper respiratory illness, such as the common cold or flu (influenza), that spreads from your nose and throat down into the airways. Acute bronchitis does not affect the lungs like pneumonia does. Pneumonia shows up on a chest X-ray, but acute bronchitis does not. Most cases of acute bronchitis are caused by viruses, although the condition also can be caused by bacteria. Acute bronchitis is very common, affecting approximately 5% of the U.S. population each year.
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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.
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SparkPeople's 500-Calorie Thanksgiving Feast
80% of SparkPeople members try to cook healthier versions of holiday favorites, according to a recent poll. Eat better this Turkey Day with these nine exclusive recipes that are BIG on taste and tradition but low in calories.
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These muffins are very filling!
The whole wheat flour makes for a dense muffin, which I like. You only need to eat one! If you want a lighter muffin try using whole wheat pastry flour, which is more finely ground and available in the bulk bins at larger grocery stores.
