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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.

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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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The human body produces and destroys 15 million blood cells every second.

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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.

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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

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