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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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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
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Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.