The foraging response requires activation of the anterior cingulate. It's a part of the brain that has been uniquely known to be spared in Alzheimer's. Glucose is not aiming to make you hungry, it's to satisfy you. If you give fructose, you activate these foraging responses. You inhibit blood flow to the hippocampus, which is involved in recent memory. The visual cortex is generally spared. Whereas the all the areas that tricked us turn out to be the regions of the brain targeted by Alzheimer's.

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