Key Takeaways

An industrial chemical appears linked to Parkinson’s diseaseHeavy exposure to airborne trichloroethylene increased Parkinson’s risk by 10%The closer people lived to one plant using the chemical, the greater their risk

THURSDAY, Oct. 2, 2025 (HealthDay News) — Long-term exposure to a chemical used in metal degreasing and dry cleaning might increase the risk of Parkinson’s disease , a new study says.

Seniors living in places with the highest airborne levels of trichloroethylene showed a 10% higher risk for Parkinson’s than those in areas with the lowest levels, researchers report in the journal Neurology .

Further, risk of Parkinson’s increased fourfold for people living one to five miles downwind of an Oregon factory that used the chemical, researchers found.

“Long-te

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