Though even that is complicated by 50 or so years of nuclear weapons testing, which likely also increased cancer rates. Not to mention all that lead everywhere. Produce gradually losing nutrients because farming mostly just focuses on the big three with fertilizer and the others are being mined out of the ground and sent to landfills, septic tanks, waste processing facilities, cemetaries, and crematoriums also doesn’t help (though I’m not sure waste processing and crematoriums remove those nutrients from the cycle like the others, since the one could produce fertilizer and the other might be sending it out into the atmosphere where it could eventually end up back in the soil).
There’s so much chaos that it’s hard to isolate causes, which then makes all the causes kinda “hide in plain sight” because they can perpetually blame the others and shit only gets worse over time.







Yeah, microplastics, too. And “pollution” being still broader than the list either of us have given so far. A car goes by smelling like gas? They are running their motor too rich and you’re literally inhaling unburnt gasoline. A car whose exhaust stinks but not like gas? Running too lean and now you’re inhaling various nitrogen compounds that aren’t great for inhaling. Ratio is correct? Still inhaling more CO and CO2 than normal, but everyone is doing it so there might not even be a control population to compare the effects against.
Oh also all the food additives that get tested for acute safety but not so much chronic (as in “will it kill you or make you obviously sick if you eat it once or a few times?” gets studied but “will eating it twice a week for 30 years have any long term effects?” is ignored).