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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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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.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.