Gen X was the peak of lifetime lead poisoning contamination.

https://www.pnas.org/doi/10.1073/pnas.2118631119

https://www.reddit.com/r/dataisbeautiful/comments/117h6n5/ge...

I like "...lead is responsible for the loss of 824,097,690 IQ points as of 2015" which is something I never hear from the people who are so interested in IQ and who can't stand it that the rest of us aren't.