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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.
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.