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6 dementia symptoms that can show up years before a diagnosis

 What to know

Noncognitive symptoms of Alzheimer's can appear years before cognitive decline, according to studies. Early signs include depression, anxiety, sleep disorders, and changes in smell and physical abilities. Lifestyle changes can prevent about 45% of dementia cases. Recent advances in diagnostics may help detect Alzheimer's earlier.

Summary is AI-generated, newsroom-reviewed.

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