Dr. Katie To explains that cavities form when mouth pH drops below 5.5, dissolving enamel. Sugar doesn't cause cavities directly; chronic acidity does. Poor digestion, mineral deficiencies, blood-sugar problems, stress, and breathing issues all lower mouth pH and signal deeper health problems.
You don't get cavities because you eat sugar. You get cavities because your mouth is acidic. And those are not the same thing. I've seen patients who barely eat sugar at all, brush twice a day, floss every single night, and still get cavities after cavities. Why? Because their mouth is living below a pH of 5.5. And that level, your enamel literally starts dissolving. And here's what blows people's minds. If your pH stays above 7, a cavity can't form. Think about that. The real problem isn't the cavity. The cavity is just a symptom. The real problem is why is your mouth acidic? Poor digestion, mineral deficiency, blood sugar issues, stress, poor breathing. Your saliva tells me all of that before a cavity appears. Your mouth may be predicting your future health before your doctor can.
