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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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The first oral chemotherapy drug for colon cancer was approved by FDA in 2001.
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If you could remove all of your skin, it would weigh up to 5 pounds.
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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.