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The longest a person has survived after a heart transplant is 24 years.
If you could remove all of your skin, it would weigh up to 5 pounds.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
There are more nerve cells in one human brain than there are stars in the Milky Way.
The familiar sounds of your heart are made by the heart's valves as they open and close.
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