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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Only 12 hours after an egg cell is fertilized by a sperm cell, the egg cell starts to divide. As it continues to divide, it moves along the fallopian tube toward the uterus at about 1 inch per day.
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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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There are 20 feet of blood vessels in each square inch of human skin.