I imagined as much. I'm 35 and had a few cavities, and have friends who've had loads of cavities and even teeth removed. But no cavities at 52, I never thought

I imagined as much. I'm 35 and had a few cavities, and have friends who've had loads of cavities and even teeth removed. But no cavities at 52, I never thought that effect was so extreme. I would like to understand what exactly in your genes is preventing cavities. Because from what I know cavities are largely bacteria attacking your teeth? So some people have better defense afainst those bacteria? How exactly does that work? I mean, microscopically.