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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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The longest a person has survived after a heart transplant is 24 years.
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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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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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