I have read that Net Carbs can be calculated by taking the weight of Total Carbs and subtracting from it the Weight of Fibre. I enjoy eating a low carb bread, that states that each slice contains 3.4gms of carbs and 4.0 gms of fibre, giving -0.6gms of carbs. That would suggest that acting a slice of bread would help reduce my BG!! Am I missing something?