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Asthma cases in Americans are about 75% higher today than they were in 1980.
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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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There are actually 60 minerals, 16 vitamins, 12 essential amino acids, and three essential fatty acids that your body needs every day.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.