Low-Carb Diets and Memory

An "expert" on yahoo health has brought us a rather poorly written article. 

She starts the article with warnings of yo-yo dieting (as if this only happens with low-carb diets).  She then quotes a recent study which showed decreased mental performance by those on low-carb diets (as compared to a more conventional diet).

Here are some problems I have with both the study and the article:

*The sample size was small--only 19 people.

*The article suggests the brain can only use glucose as fuel.  Not true:  the brain can adapt to low-carb diets by using ketones as fuel.

*Subjects were only followed for three weeks.  Any low-carb dieter will tell you the first week or two are the most difficult.  Your body (and brain) can adapt to a low-carb diet, but it takes time.

*The writer proceeds to recommend the "food pyramid," which I think is way too heavy on carbohydrates.

I'm not saying low-carb diets are for everyone.   But don't base your diet decisions on Yahoo health articles. 

I'd recommend Lyle McDonald's The Ketogenic Diet if you want some real research and information.