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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.