Why Do We Itch?

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It’s one of the most annoying sensations our bodies can feel, but does anything feel better than when you scratch an itch? Ok, maybe *some* things. But itching and scratching are up there. How does this weird sensation work? And what is itching for?

References: http://bit.ly/2IiIqWn

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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
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Видео Why Do We Itch? канала It's Okay To Be Smart