Study: Secondhand smoke causes cavities in children

This is really embarrassing stuff… but if the target is sufficiently demonized, junk scientists can get away with it.

Below is the study abstract. There is clearly no biological plausibility to this — how does smoke cause tooth decay? If the reported effect is genuine (and the correlations are weak), the effect would most likely be a socio-economic one. That is, poorer people are less likely to have good dental hygiene.

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