Brain plaques in healthy individuals linked to increased Alzheimer's risk

Scientists have long assumed that amyloid brain plaques found in autopsies of Alzheimer's patients are harmful and cause Alzheimer's disease. But autopsies of people with no signs of mental impairment have also revealed brain plaques, challenging this theory. Now, for the first time, researchers have shown that brain plaques in apparently healthy individuals are associated with increased risk of diagnosis with Alzheimer's disease years later.

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