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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.