[smoldesu]

Yeah, it's always baffled me. Growing up I ate snacks and sugar fiendishly, but only ever had maybe one or two cavities in 2nd grade or so.

I had another friend who got cavities on an almost yearly basis. What was really fascinating was how boring her diet was; I never saw her eat anything more complex than a peanut butter sandwich or cheese pizza. She brushed, flossed and mouthwashed every day but could never get ahead of it. Meanwhile I went through all of middle and high school without any major dental work besides getting my wisdom teeth pulled.

It's all very odd, and my personal experiences have also led me to believe that diet plays a smaller role than we might think. I could be wrong though, I'm willing to defer to the most reasonable explanation.

[lost_tourist]

It's genetic, some people just have thicker and strong enamel and salivary activity. Just like some people are scrawny and others are naturally strong without really trying