The Sugar and Alzheimer's Connection | Mother Jones
Egged on by massive food-industry marketing budgets, Americans eat a lot of sugary foods. We know the habit is quite probably wrecking our bodies, triggering high rates of overweight and diabetes. Is it also wrecking our brains?
That's the disturbing conclusion emerging in a body of research linking Alzheimer's disease to insulin resistance—which is in turn linked to excess sweetener consumption. A blockbuster story in the Sept. 3 issue of the UK magazine The New Scientist teases out the connections.
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What's emerging, the magazine shows, is that insulin "also regulates neurotransmitters, like acetylcholine, which are crucial for memory and learning." That's not all: "And it is important for the function and growth of blood vessels, which supply the brain with oxygen and glucose. As a result, reducing the level of insulin in the brain can immediately impair cognition."
So when people develop insulin resistance, New Scientist reports, insulin spikes "begin to overwhelm the brain, which can't constantly be on high alert," And then bad things happen: "Either alongside the other changes associated with type 2 diabetes, or separately, the brain may then begin to turn down its insulin signalling, impairing your ability to think and form memories before leading to permanent neural damage"—and eventually, Alzheimer's.
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