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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).
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On average, the stomach produces 2 L of hydrochloric acid per day.
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The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.