So, this article turns up:

https://www.theguardian.com/environm...-from-vehicles

The article references studies which suggest a link between pollution during gestation/early years and the referenced studies even offer suggestions on how this correlation they found might have an actual causal relation (i.e. possible mechanisms). Further study needed, though.

Which then promptly enrages several people who can't be arsed to actually read the damn thing with one idiot going:

"But your diet has a much larger effect on your BMI!"

Yes, you moron, and exactly fucking no one disputes that. But this effect (if it is true) does not make it easier. I guess the idea of "cumulative effects" is hard to grasp.

Another bloody idiot suggested that this was all "for the research grants!"

Jesus Christ, these people. If we had them around 40 to 60 years back, we'd still have chainsmoking everywhere and would drive cars with leaded gasoline.

Then again, them still using the latter one would explain a whole lot about those morons.