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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.