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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.
Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
There are 20 feet of blood vessels in each square inch of human skin.
The average office desk has 400 times more bacteria on it than a toilet.