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Excessive alcohol use costs the country approximately $235 billion every year.
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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
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Signs and symptoms of a drug overdose include losing consciousness, fever or sweating, breathing problems, abnormal pulse, and changes in skin color.
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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 immune system needs 9.5 hours of sleep in total darkness to recharge completely.