Dr. Ray Dorsey

Dr. Ray Dorsey, a University of Rochester neurologist, makes the case that Parkinson's disease is largely environmental rather than primarily genetic or age-driven. The specific exposures he highlights (paraquat herbicide, trichloroethylene degreasing solvent, certain industrial chemicals) have growing evidence behind them and have produced policy action in several jurisdictions. Aging and genetics still matter; the framing he is pushing back against is the assumption that aging alone explains the rising incidence. Mainstream neurology research increasingly supports the environmental-contributors framing without resolving the magnitude of effect for individual exposures. Practical implications include reducing personal exposure where reasonable and supporting the documented science-and-policy efforts on the highest-confidence chemicals.

Dr. Ray Dorsey, a University of Rochester neurologist and co-author of 'Ending Parkinson's Disease', explains why Parkinson's incidence has more than doubled in 25 years and is projected to double again. He argues that environmental factors (particularly certain pesticides like paraquat, dry-cleaning chemicals like trichloroethylene, and some industrial solvents) appear to play a meaningful role beyond what aging or genetics alone explain. The environmental-trigger framing is increasingly mainstream in neurology research; specific causal attribution for individual cases remains harder to establish. Practical implications discussed include reducing personal exposure to identified risk chemicals and supporting research and policy action on the documented industrial sources.

Parkinson's disease cases may be rising faster than aging alone explains. Environmental exposures, lifestyle, and early warning signs like loss of smell and chronic constipation may all play a role alongside genetics. Structured aerobic exercise is the strongest lifestyle lever supported in trials so far.