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Allergies play a major part in the health of children. The most prevalent childhood allergies are milk, egg, soy, wheat, peanuts, tree nuts, and seafood.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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If all the neurons in the human body were lined up, they would stretch more than 600 miles.

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Looking at the sun may not only cause headache and distort your vision temporarily, but it can also cause permanent eye damage. Any exposure to sunlight adds to the cumulative effects of ultraviolet (UV) radiation on your eyes. UV exposure has been linked to eye disorders such as macular degeneration, solar retinitis, and corneal dystrophies.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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