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Approximately 500,000 babies are born each year in the United States to teenage mothers.
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.