If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.
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In 1886, William Bates reported on the discovery of a substance produced by the adrenal gland that turned out to be epinephrine (adrenaline). In 1904, this drug was first artificially synthesized by Friedrich Stolz.
Synthesis of the active hormone formed from vitamin D or its precursor in skin.
