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Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
The human body produces and destroys 15 million blood cells every second.
Everyone has one nostril that is larger than the other.
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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