Numerous studies suggest that environmental exposures play a critical role in Parkinson disease (PD) pathogenesis, and large, population-based studies have the potential to advance substantially the identification of novel PD risk factors.
The study was done nationwide including geographic relationship between PD and air pollution, specifically PM2.5 (particulate matter with a diameter <2.5 micrometers), using population-based, United States (U.S.) Medicare data.
Researchers at Barrow Neurological Institute found that people living in regions with median levels of air pollution have a 56% greater risk of developing Parkinson’s disease compared to those living in regions with the lowest level of air pollution.
Brittany Krzyzanowski, PhD, a researcher at Barrow Neurological Institute, who led the study said: ‘Previous studies have shown fine particulate matter to cause inflammation in the brain, a known mechanism by which Parkinson’s disease could develop. Using state-of-the-art geospatial analytical techniques, we were, for the first time, able to confirm a strong nationwide association between incident Parkinson’s disease and fine particulate matter in the U.S.’
The study found that the relationship between air pollution and Parkinson’s disease differs around the country, but as the main pollutant being studied was PM2.5, its chemical composition is likely to vary from area to area. The Mississippi-Ohio River Valley was identified as a Parkinson’s disease hotspot, and here studies have identified heavy metals within PM2.5, including manganese and zinc linked to iron and steel manufacturing.
P.S. For those who need affirmation of the above to please their constant doubting of people posting information in this forum, please read the link below
n.neurology.org/content/ear...
Best wishes and keep the faith to all.