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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
There are 20 feet of blood vessels in each square inch of human skin.
There are more nerve cells in one human brain than there are stars in the Milky Way.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
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