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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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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Fewer than 10% of babies are born on their exact due dates, 50% are born within 1 week of the due date, and 90% are born within 2 weeks of the date.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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Liver spots have nothing whatsoever to do with the liver. They are a type of freckles commonly seen in older adults who have been out in the sun without sufficient sunscreen.