Axona contains FDA-approved food additives and a special formulation of a fat called caprylic triglyceride, which Accera says provides the brain an alternative energy source to glucose called ketones after the product is metabolized by the liver.

WSJ: 'Medical Foods' and Supplements for Brain Health Advance

Aside from your liver breaking down glycogen into glucose, your body also has the ability to manufacture glucose in a process called gluconeogenesis.

CNN: Hypoglycemia

Scans also show that the temporal lobe, which contains the hippocampus, and another brain region called the posterior cingulate use less glucose than a normal brain, suggesting they have shut down.

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