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Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.
Vaccines prevent between 2.5 and 4 million deaths every year.
There are more nerve cells in one human brain than there are stars in the Milky Way.