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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 immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The average adult has about 21 square feet of skin.
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Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.
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In 2006, a generic antinausea drug named ondansetron was approved. It is used to stop nausea and vomiting associated with surgery, chemotherapy, and radiation therapy.