Prescription brain-food to treat Alzheimer's

Got an interesting press release a few days ago. "Axona is a first-in-class medical food for the clinical dietary management of the metabolic processes associated with mild-to-moderate Alzheimer’s. Dispensed by prescription, it targets the metabolic deficiencies and imbalances associated with AD by providing an alternative energy source for brain cells."
Prescription brain food? Interesting.
"Axona addresses a metabolic abnormality of Alzheimer's disease that has not previously been examined. The goal of therapy is to optimize cognitive function. Axona is safe and can be used with other common therapies for Alzheimer’s."
I've read a lot about Alzheimer's and this is the first I've heard of a metabolic component.
"Alzheimer’s disease is a progressive and fatal neurological disease characterized by a substantial decrease in the brain’s ability to metabolize glucose, which is the brain’s primary source of energy. Known as hypometabolism, this defect may contribute to both the clinical and pathological course of the disease. Axona targets the metabolic defects of glucose utilization in the brain by providing an alternative energy source. Axona is digested and metabolized by the liver to form ketone bodies, naturally occurring compounds produced by the body at low levels. These ketone bodies act as a secondary energy source for the brain to help maintain and improve cognitive function."
Hmm  Are these the same ketones produced by a low-carb diet? I've been on Atkins and used the ketone strips to see if I was in the correct zone for weight loss. Is weight loss is a side effect with this food?  I wonder if people who are on low-carb diets in the long term (I have a friend who has been low carb for over 10 years) have a lesser chance of getting Alzheimers?   Is there any relation to diabetes? 
I guess I asked more questions than I answered here.  If my dad was still alive I'd be on the phone to his doctor finding out more information on this, that's for sure.
The company producing this interesting new treatment is Accera.