Quote:
Originally posted by rockzilla
From what I remember, the brain runs on glucose. If there's no glucose readily available, the body'll start tearing up muscle tissue to get amino acids to convert to glucose. I'm not a dietician, nor am I a biochemist, so I may be wrong.
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actually, the brain also runs on ketone bodies, which are what you get from fat breakdown. it's just not as efficient and aren't used quite as well as glucose. so for someone on atkins, to feel a little mentally sluggish wouldn't be suprising. also, since so much protein is being eaten, there's plenty in the blood to be used to convert to glucose, so the breakdown of muscle isn't likely.