"At the University of Southern Californa, Los Angeles, Dr. Jeff Bronstein, head of the university’s movement disorders clinic, and Dr. Beate Ritz, professor of epidemiology at Fielding School of Public Health, collaborate on environmental factors that could trigger the onset of PD, like pesticides, both for the home and industrial use.
Ritz has little doubt when she speaks on this topic.
“Some pesticides are neurotoxic in a way that causes Parkinson’s disease when you are exposed over a very long time or very high levels,” she said.
There are many ways people can trigger Parkinson’s and many reasons why someone is diagnosed with it. Bronstein believes every case is unique.
“I think of it as a humongous Venn diagram in which there and many, many different factors,” he said."