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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
Your heart beats over 36 million times a year.
The human body produces and destroys 15 million blood cells every second.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
The average office desk has 400 times more bacteria on it than a toilet.
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