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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.

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Approximately 25% of all reported medication errors result from some kind of name confusion.

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

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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.

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