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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.

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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 longest a person has survived after a heart transplant is 24 years.

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Thyroid conditions may make getting pregnant impossible.

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