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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.
There are 60,000 miles of blood vessels in every adult human.
There are approximately 3 million unintended pregnancies in the United States each year.