| Your body is able to make all the glucose you need through gluconeogenisis, and it isn't a lot. Not if fat is your primary source of energy. So you don't actually need to eat any carbohydrate. Glucose is more easily turned into energy. But, for most requirements, your body will run happily on ketones too. On the other hand, if you have trained your body to rely on carbs for energy, it needs a lot of the stuff.
The high-carb diet is a new fangled innovation. And while it makes good political and economic sense, the public health consequences are unfortunate to say the least. But for a diabetic, a 50%+ cabohydrate diet only makes sense if you are able to achieve good BG control in spite of it.
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In my humble opinion  
Type1 since 1977
MDI using Lantus, Protophane, Novorapid and Actrapid
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