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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.

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

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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.

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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

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Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

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