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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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People about to have surgery must tell their health care providers about all supplements they take.
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There are 20 feet of blood vessels in each square inch of human skin.
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Long-term mental and physical effects from substance abuse include: paranoia, psychosis, immune deficiencies, and organ damage.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.