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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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Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.
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In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
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Everyone has one nostril that is larger than the other.
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According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.
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