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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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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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If all the neurons in the human body were lined up, they would stretch more than 600 miles.