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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.

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The average office desk has 400 times more bacteria on it than a toilet.

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Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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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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