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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The human body produces and destroys 15 million blood cells every second.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.