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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).
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
Illicit drug use costs the United States approximately $181 billion every year.
Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.