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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.