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Did you know?
When blood is deoxygenated and flowing back to the heart through the veins, it is dark reddish-blue in color. Blood in the arteries that is oxygenated and flowing out to the body is bright red. Whereas arterial blood comes out in spurts, venous blood flows.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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It is difficult to obtain enough calcium without consuming milk or other dairy foods.
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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).