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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 Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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For high blood pressure (hypertension), a new class of drug, called a vasopeptidase blocker (inhibitor), has been developed. It decreases blood pressure by simultaneously dilating the peripheral arteries and increasing the body's loss of salt.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.