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Did you know?
According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.
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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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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 more bacteria in your mouth than there are people in the world.