My daughter (5 yo) just asked me a question which I can't answer (not the
first time for that!). I thought someone on the list might be able to help.
She knows a bit about bacteria. We've talked about cells & other little
things too... I'm going to get my hands on a microscope ASAP.
Anyway, I've told her about plaque in your mouth, and how it is bacteria
chomping on your teeth, which are promoted by sugary foods. I could be wrong
about that, I've just been pedalling the standard parent party line.
Also, she knows that sugar is used as a preservative in foods, like jam.
Another piece; she interogated me recently about food rotting; why does it
happen? I told her that bacteria eat it.
So she has put these things together, and asks this question...
If sugar is a preservative, and stops bacteria from eating food, why does it
cause decay in teeth, which is due to promotion of bacteria?
I'm stumped. Help!
Emlyn
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