New paper links trichloroethylene (TCE) exposure to Parkinson’s disease (https://bit.ly/3L9rof6 ). TCE is a degreasing agent, has previously been used in dry cleaning and coffee decaffeination, and helps produce other chemicals. Using EPA national air toxics assessment has some uncertainty when applied to low concentration chemicals like TCE and come correlated exposure may in fact be more responsible, but identifying the locations to test this idea is a valuable step. The reported increase in risk from TCE exposure is about 10%. It is important to note that the reason we can identify effects of this magnitude from exposure concentrations 2-3 orders of magnitude below the OSHA permissible exposure limit is partly due to the improvements in environmental quality that have been achieved over the past few decades. (https://bit.ly/4o2q77N )
