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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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

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The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

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During the twentieth century, a variant of the metric system was used in Russia and France in which the base unit of mass was the tonne. Instead of kilograms, this system used millitonnes (mt).

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