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Younger groundwater in carbonate aquifers linked to 24% higher Parkinson’s risk, older water to 6.5% lower risk, study finds.
A 2026 study links younger groundwater in carbonate aquifers to a 24% higher Parkinson’s disease risk, while older groundwater in the same systems is tied to a 6.5% lower risk per standard deviation in age.
Analyzing data from over 12,000 patients and 1.2 million controls near 1,000 groundwater sites, researchers used water age and aquifer type as proxies for exposure to environmental neurotoxins, though no specific contaminants were identified.
The findings, not yet peer-reviewed, suggest hydrogeology influences exposure to harmful substances, potentially through factors like pesticide or cyanobacterial byproduct infiltration, with climate and pollution trends possibly increasing risk.
Experts call for expanded monitoring and further research to clarify links and inform prevention.
El agua subterránea más joven en los acuíferos de carbonato está relacionada con un 24% más de riesgo de Parkinson, mientras que el agua más vieja con un 6,5% menos de riesgo, según un estudio.