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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.

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About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

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People about to have surgery must tell their health care providers about all supplements they take.

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Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

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