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Your heart beats over 36 million times a year.
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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.
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Medication errors are three times higher among children and infants than with adults.
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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.
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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.