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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
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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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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
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People about to have surgery must tell their health care providers about all supplements they take.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.