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Thyroid conditions may make getting pregnant impossible.
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Blood is approximately twice as thick as water because of the cells and other components found in it.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Applying a surgical type of mask
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