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LONDON (Reuters) – Feeling tired and depressed on awakening may be an early sign of dementia and a bad night's sleep is a red sign of Alzheimer's disease, warn experts.
Tests have shown that people who do not sleep well have higher levels of toxic "Tao" in the brain, characteristic of Alzheimer's disease, the most common form of dementia.
Dr. Brendan Lucy, of the University of Washington at St. Louis, said measuring people's sleep could be a useful way to detect Alzheimer's before or when memory and thinking problems began to develop.
Changes in the brain leading to the onset of Alzheimer's disease occur slowly and silently. Two years before the appearance of signs of amnesia and confusion, toxic proteins begin to collect plaques in the brain and clusters of these proteins begin to appear to dispel major parts of the brain.
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