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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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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.