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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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