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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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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There are more sensory neurons in the tongue than in any other part of the body.
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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.
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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.