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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
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To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.
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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.