Inspired by goady thread which has just been deleted, but picking up on one point that's always puzzled me:
I don't understand why people have smoothies instead of eating fruit and vegetables in something more like their natural form.
Don't our jaws and teeth need the exercise, chomping away?
Does it affect the amount of fibre you're getting if you blitz fruit and veg to pulp before eating it? We need that fibre going through the gut to keep things moving at a brisk pace and to carry off all sorts of nasty stuff with it.
And surely it must be awfully easy to swallow a huge amount of fructose from the fruit and the sweeter vegetables (eg parsnip, carrot) if it's all in liquid form? Fructose is just sugar, you know. Sugar + acid (lots of that in fruit too) = disaster for the teeth.
Am I missing something?