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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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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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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.