The MYTH of requiring 130 grams of carbohydrate in the diet for the brain to function.

This is an outdated concept. We require far less carbohydrate in our diet because the liver will convert protein into glucose to adequately ‘run’ the brain. That’s how we survive in starvation.

http://diabetesupdate.blogspot.com.au/2008/11/myth-busting-your-brain-and-that.html

The brain will run very nicely on ketone bodies as the other fuel in hybrid engine bodies. There is a transition phase but brain function has been shown to improve on a Low Carb and High Fat diet.

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3116949/pdf/nihms246883.pdf

The only cell in the body that requires glucose exclusively is the red blood cell or erythrocyte. It will get that from the gluconeogenesis of glucose from protein when there is no carbohydrate in the diet.

http://www.med-ed.virginia.edu/courses/path/innes/nh/energy.cfm

http://www.nofructose.com/introduction/carbohydrate/