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The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Everyone has one nostril that is larger than the other.
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Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.
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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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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.