Study Links Sex Differences to Parkinson's Risk
Researchers found gene activity in brain cells differs between men and women with Parkinson's disease.
Updated on Nov. 2, 2026 in Alzheimer’s
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Researchers identified sex-specific differences in gene activity within brain cells that may help explain why Parkinson's disease affects men more frequently than women. Men are 1.5 to 2 times more likely than women to develop the disease.
Why it matters
Parkinson's affects approximately 9.4 million people worldwide, and the findings could help clinicians tailor how they predict symptoms and choose treatments. Understanding sex-based biological differences may move care toward more personalized approaches.
The analysis compared brain tissue from 73 people with Parkinson's against 24 people without the disease across five brain regions, with 28 women and 45 men in the patient group. Whether these sex-linked gene differences drive different disease courses has not yet been determined.
The players
Saarland University
A public research university in Saarland, Germany, where the lead researchers on the study are based.
German Research Foundation (DFG)
Germany's central self-governing research funding organization, which is supporting the 'SEX and GLIA' Priority Programme.
The details
Researchers examined gene expression separately in neurons, astrocytes, oligodendrocytes and microglia in healthy and Parkinson's brains. Gene activity related to mitochondria in astrocytes and myelin-producing genes in oligodendrocytes differed between sexes, and brain cells in Parkinson's patients switched on chaperone proteins that help damaged proteins fold correctly.
Timeline
Autumn 2026: The German Research Foundation's 'SEX and GLIA' Priority Programme begins.
2026: Findings are scheduled for presentation at the FENS Forum 2026.
Research Context
The findings emerge from the German Research Foundation's 'SEX and GLIA' Priority Programme, which begins in autumn 2026 to study sex-based differences in brain support cells. An earlier study of 71 agricultural workers with early Parkinson's found DNA methylation changes across 69 genomic regions in women and only two in men, reinforcing the view that sex shapes the disease's biology.
Clinicians may eventually use sex-specific biological profiles to better predict how Parkinson's symptoms will develop and to select treatments suited to individual risk. The research points toward treatment plans that account for biological differences rather than assuming all patients are alike.
The takeaway
Sex can shape the biology of Parkinson's disease at the level of individual brain cells, which may matter for how patients are diagnosed and treated. Readers following neurological research should watch for follow-up results from the 'SEX and GLIA' programme.
What happens next
The DFG 'SEX and GLIA' Priority Programme begins in autumn 2026, and the findings are scheduled for presentation at the FENS Forum 2026.
Further reading
For related coverage of neurodegenerative research, see Alzheimer's news.
Source note: This article includes information reported by SciTechDaily.
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