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The longest a person has survived after a heart transplant is 24 years.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.