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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Your heart beats over 36 million times a year.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
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Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.