I have her book and she does have some insights into brain injury.

But, I do not see any science background and notice a lack of scientific method in her approach to her theories. Unfortunately, blood sugar (glucose) can also be turned into alcohol. Lucky our bodies do not do that kind of a conversion if we are still alive.

She talks about foods that convert to sugar in the brain. Carbs are converted to sugars in the intestines.
She says to go ahead and eat all of the vegetables you want since they do not convert to sugar. Some veggies are high in carbs, ( carrots, peas, onions,) They will quickly convert to sugar, in the intestines.

I would be cautious with her recommendations.
She is big at overstating her case.