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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.
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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.