Newswise — Using data from two large, long-running study projects in the Puget Sound region — one that began in the late 1970s measuring air pollution and another on risk factors for dementia that began in 1994 — University of Washington researchers identified a link between air pollution and dementia.
In the UW-led study, a small increase in the levels of fine particle pollution (PM2.5 or particulate matter 2.5 micrometers or smaller) averaged over a decade at specific addresses in the Seattle area was associated with a greater risk of dementia for people living at those addresses.
“We found that an increase of 1 microgram per cubic meter of exposure corresponded to a 16% greater hazard of all-cause dementia. There was a similar association for Alzheimer’s-type dementia,” said lead author Rachel Shaffer, who conducted the research as a doctoral student in the UW…
