I have also heard that the first port of call for our bodies is to produce the sugar it needs from the carbs we eat and if their not available it will go elsewhere to get them , Protein etc , If this is the natural process is that not we should be doing , I do understand we eat way more carbs than we need and do need to cut down but surely zero can't be healthy ! I was told (all be it 46 yrs ago) 200 gms carbs per day is what our bodies need and that is what I always aimed for , I have cut down to about 150 now but I think thats more a case of getting older and not needing so much food .