High-fat, low-carbohydrate diet may improve brain function and memory in older adults

Brandt explains that, typically, the brain uses the sugar glucose -- a product of carbohydrate breakdown -- as a primary fuel. However, research has shown that in the early stage of Alzheimer's disease the brain isn't able to efficiently use glucose as an energy source. Some experts, he says, even refer to Alzheimer's as "type 3 diabetes."

Using brain scans that show energy use, researchers have also found that ketones -- chemicals formed during the breakdown of dietary fat -- can be used as an alternative energy source in the brains of healthy people and those with mild cognitive impairment. For example, when a person is on a ketogenic diet, consisting of lots of fat and very few sugars and starches, the brain and body use ketones as an energy source instead of carbs.

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-low-carbohydrate-diet-may
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