Women in their 70s and 80s who were exposed to higher levels of air pollution experienced greater declines in memory and more Alzheimer's-like brain atrophy than their counterparts who breathed cleaner air, new research has revealed.
"This is the first study to really show, in a statistical model, that air pollution was associated with changes in people's brains and that those changes were then connected with declines in memory performance," said study researcher Andrew Petkus, Assistant professor university of south california in US.
The researchers also gathered information about where the 998 women lived, as well as environmental data from those locations to estimate their exposure to fine particle pollution.
When all that information was combined, researchers could see the association between higher pollution exposure, brain changes and memory problems even after adjusting to take into account differences in income, education, race, geographic region, cigarette smoking and other factors.
