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The human body produces and destroys 15 million blood cells every second.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.

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