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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.
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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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Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.