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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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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.

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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

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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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