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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 ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Everyone has one nostril that is larger than the other.
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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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Vaccines prevent between 2.5 and 4 million deaths every year.