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Your heart beats over 36 million times a year.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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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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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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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.