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There are approximately 3 million unintended pregnancies in the United States each year.
Your heart beats over 36 million times a year.
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
There are more nerve cells in one human brain than there are stars in the Milky Way.
Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.
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