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Did you know?
Thyroid conditions may make getting pregnant impossible.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
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There are 60,000 miles of blood vessels in every adult human.