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There are more sensory neurons in the tongue than in any other part of the body.
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Excessive alcohol use costs the country approximately $235 billion every year.
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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