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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.
More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
There are more nerve cells in one human brain than there are stars in the Milky Way.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.