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Did you know?
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
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Astigmatism is the most common vision problem. It may accompany nearsightedness or farsightedness. It is usually caused by an irregularly shaped cornea, but sometimes it is the result of an irregularly shaped lens. Either type can be corrected by eyeglasses, contact lenses, or refractive surgery.
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A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.