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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
The average office desk has 400 times more bacteria on it than a toilet.
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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