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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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Certain chemicals, after ingestion, can be converted by the body into cyanide. Most of these chemicals have been removed from the market, but some old nail polish remover, solvents, and plastics manufacturing solutions can contain these substances.
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Approximately 500,000 babies are born each year in the United States to teenage mothers.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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In 1864, the first barbiturate (barbituric acid) was synthesized.