Your Ancestors Had Better Teeth Than You

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You would think that without dentists and fluoride mouthwash, early humans would have terrible teeth. But tooth decay depends on access to sugars and starches -- meaning most early humans had decent teeth up until the Agricultural Revolution.

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Sources:
https://docs.google.com/document/d/e/2PACX-1vTcZeAq1JZCsBszTSh5g1gBvGeZHbMcXFX2jTx4d8Z1SWogMxxbNeBbEuSGcoB5dJ86L0ssLnHsXJB5/pub