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Did you know?
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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Vaccines prevent between 2.5 and 4 million deaths every year.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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Your heart beats over 36 million times a year.