Women with Parkinson's disease may show more Alzheimer's-related brain changes than men

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New research presented at the European Academy of Neurology Congress indicates women with Parkinson's disease may exhibit more Alzheimer's-related brain changes than men. The study suggests sex differences in Alzheimer's pathology among Parkinson's patients could influence disease progression and care approaches.

Women with Parkinson's disease may be more vulnerable to Alzheimer's-related changes in the brain than men, according to new research presented at the European Academy of Neurology (EAN) Congress 2026. Parkinson's disease and Alzheimer's disease frequently co-occur in older adults, yet sex differences in Alzheimer's-related pathology among people with Parkinson's disease remain underexplored.