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Health

Your mouth is home to billions of bacteria

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You might want to rethink kissing anyone ever again. A single healthy human mouth is a thriving metropolis for roughly 20 billion microscopic squatters spanning over 700 distinct bacterial species. They form complex communities on your teeth, tongue, and cheeks, feeding on the leftover sugar from that iced coffee you drank three hours ago.

Your mouth is home to billions of bacteria
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