I had been wondering about chewing gum as well, I chew it all the time anyway and my reasoning was that if I was hungry anyway the gum wouldn't do any harm... But - I read the back of several different packets of sugar-free gum in the supermarket the other day, and they all contain calories!!! Yes, I know we wouldn't chew several hundred grams a day (actually, i could well be tempted to!) but there were far more calories and carbs in than i expected... I showed my husband and tried to suggest that it wouldn't be too bad since we spit most of the gum out once the flavour has gone, but he reckons the calories per 100 gr were per 100 gr chewed, not per 100 gr flavour removed... Unfortunately he's probably right... Have to say it surprised me though, I have never looked at it before, just presumed no sugar meant no calories... It won't stop me chewing gum once I'm done with CD, at least it won't harm my teeth, but when we're that restricted on calories I suppose it could make a difference...