https://www.eurekalert.org/pub_releases/2017-01/pho-lnm010317.php https://www.eurekalert.org/pub_releases/2017-01/pho-lnm01031... According to the press-releas

https://www.eurekalert.org/pub_releases/2017-01/pho-lnm010317.php https://www.eurekalert.org/pub_releases/2017-01/pho-lnm01031... According to the press-release, a difference in distance of only 50m from a high-traffic road creates an observable 7% difference in dementia risk. I'd say it's very easy to both live in a city centre and live 50m away from a major road.