A lesser-known finding points to benefits for oral health: unsweetened coffee may help reduce the proliferation of bacteria linked to cavities. Experts warn, however, that adding sugar or artificial sweeteners negates this effect and contributes to enamel erosion, so the key is to drink it unsweetened.
The authors emphasize that the benefits are observed with moderate consumption and warn against excessive caffeine. Furthermore, the quality and format of the coffee (ground versus instant) can alter its chemical composition and, therefore, its effects. That’s why they recommend prioritizing variety of origin and traditional preparation whenever possible.
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