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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
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Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
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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.