Doesn’t seem to be doing much for researchers either
Their study … surveyed 19,409 women ages 70 to 81 nationwide from the Nurses’ Health Study Cognitive Cohort. The researchers estimated their levels of exposure to air pollutants starting in 1988, with cognitive tests administered three times at two-year intervals between 1995 and 2001.
How a person eats will do more to put their mind in a fog than pollution ever would, but that’s never a factor in any study.