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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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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
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There are approximately 3 million unintended pregnancies in the United States each year.