(Beyond Pesticides, April 19, 2024) Parkinson’s disease (PD) and certain forms of dementia have been associated with exposure to pesticides, industrial chemicals, and air pollution for decades. But the mechanisms of disease progression have been unclear, and U.S. regulators have been reluctant to recognize the risks. Now neurologist E. Ray Dorsey, MD of the University of Rochester and researchers from the University of Alabama at Birmingham and Aarhus University in Denmark propose a new research paradigm based on tracking how toxicants cause neurodegeneration through inhalation and ingestion pathways. The paradigm, the authors believe, can be used to gain insight into how PD and a form of dementia known as Lewy body disease (LBD) are initiated as many as 50 years before the onset of symptoms. Dorsey and colleagues build on a recent theory that PD and LBD may be two versions of the same basic disease, both involving Lewy bodies in the nervous system. The group’s proposal was published in the Journal of Parkinson’s Disease in April. If its recommended research agenda produces the anticipated empirical support, the new paradigm will demand integration of many interdisciplinary lines of evidence showing that environmental exposures to synthetic chemicals may be the primary cause […]
