I am very carb sensitive and recently cut out one carbohydrate block per meal. This has helped me and reduced some of my hunger between meals, however, I am now only consuming around 100 grams of carbohydrate per day.
Since the brain needs 120-140 grams of glucose per day, how will my brain get that much with this amount of carbohydrate? :confused:

The book "The Anit-Aging Zone" is an excellent resource for better understanding the science behind the diet. You should be fine with that amount of carb daily.