Read your link with interest Mamie - as we know Dr Unwin I always follow his research with interest and he's my SiL and BiL's GP.
It makes so much sense that I can't believe the slow uptake, except of course as GJ mentions, those with vested interests. Or perhaps those who think this is Atkins - which it is not.
My carbs come from fruit, usually berries, (only for breakfast) and those contained naturally in vegetables (though we don't count potatoes as vegetables, they're on our high carb list). Initially we stuck to low carb veg, mainly brassicas, onions and salads, etc.. but now we include a full range, even root vegetables like carrots, beetroot and those sweeter vegetables such as tomatoes, sweet peppers, sweet potatoes and even occasionally peas. On the odd occasion we do have potatoes, but not pasta, or rice, or bread.
I have a glass of wine or two if I am out, or we have guests, and if someone has gone to the effort of cooking us a meal, or basking a cake, we will eat whatever they put in front of us with pleasure and return to our own régime when we can.