I am not trying to be a smart ass (for once); I am interested in the facts.
trailhkr1: Specifically, which nutrients or effects on the body are characteristic of carbohydrates which are not characteristic of fats and would account for this?
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lawdave: Have you been consuming fewer than 130 grams of carbohydrates per day and for how long? Does your brain function properly? (Okay, that last one was a little smart ass, but I'm truly interested in your story.)
LOL. I have no idea how many carbs I am consuming. I was wondering about the claim that I need to eat at least 130 grams of carbs for proper brain function also. None of the books I have read have suggested this is a issue. I eat leafy green vegatables every day but no bread or wheat products. I think my brain is functioning okay. I tried a one week jury trial last month and won.
For a pretty decent explanation of brain function in a low carb, high fat diet, try Dr Eades at proteinpower.com.
http://www.proteinpower.com/drmike/ketones-and-ketosis/metabolism-and-ketosis/