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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Cyanide works by making the human body unable to use oxygen.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.