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Did you know?
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.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
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There are approximately 3 million unintended pregnancies in the United States each year.