Brynne (Irving, Texas) on 12/17/2007

Replied By Gayle (Upland, California) on 03/27/2022

The brain is made up of about 50% fat. You need fat in your diet. The brain can run on glucose or fat, but there is a lot of evidence that fat may be a better source, that is the ketogenic diet. I feel much better on a ketogenic diet. My brain is more clear, less fog and it puts me in a better mood. Some people speculate that paleolithic man lived in ketosis because he did not have the massive amounts of carbohydrates available to him that we presently have in our diets.