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The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
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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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Excessive alcohol use costs the country approximately $235 billion every year.
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An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.