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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
Medication errors are more common among seriously ill patients than with those with minor conditions.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
Cucumber slices relieve headaches by tightening blood vessels, reducing blood flow to the area, and relieving pressure.