Scientists may be one step closer to a cure for Alzheimer's after pinpointing subtle telltale signs in the brains of people most likely to get the disease.
The memory-robbing illness has long been believed to be caused by a build-up of the proteins amyloid and tau in the brain.
While most ageing brains have some level of both these proteins, a significant clump of them can form plaques and tangle — and this is thought to be behind dementia symptoms.
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