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Did you know?
During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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There are more sensory neurons in the tongue than in any other part of the body.
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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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The familiar sounds of your heart are made by the heart's valves as they open and close.