Cigarette smoking has fallen a LOT in the US in the past few decades, though there does seem to be a resurgence lately with "vaping". Pollution is lower too (a

Cigarette smoking has fallen a LOT in the US in the past few decades, though there does seem to be a resurgence lately with "vaping". Pollution is lower too (again, in the US): cars used to pollute a LOT more. Smog used to be far, far worse in the LA area decades ago, so even with more people and more cars, pollution is lower, particularly localized pollution that affects people more. Of course, global warming pollution is certainly higher, but that isn't localized and shouldn't have any effect on you (it's just CO2). Obesity is significantly worse, however.