California’s Central Valley, famous for producing much of the food Americans eat, is also infamous for its inferior air quality and its high rates of poverty, housing insecurity and at-risk workers.
Increasing epidemiological evidence has shown a correlation between long-term exposure to fine particulate matter (PM2.5) and the incidence of Alzheimer's disease and related dementias (ADRD).
Areas with severe PM2.5 pollution — including the Central Valley — are often inhabited by low-income residents who are disproportionately affected by these environmental hazards.