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I'm not doing anything as extreme as the Atkins diet, just cutting out potatoes, sugar, bread, rice and noodles. I did this before with no ill effects (including smelly breath!), presumably because the carbohydrates in the fruit & veg were enough. I just find that lately I crave for sweet and startchy things all the time and wanted to cut them out for a bit to see if this helped. I wouldn't be sorry if I lost some weight too! Thanks for the useful advice and links.