“We were able to show through our hair samples what the lead concentrations are before and after the establishment of regulations by the EPA,” said demographer #link(“https://profiles.faculty.utah.edu/u0030780”)[Ken Smith];, a distinguished professor emeritus of family and consumer studies. “We have hair samples spanning about 100 years. And back when the regulations were absent, the lead levels were about 100 times higher than they are after the regulations.”
Americans use of lead has causing significant iq damage:
https://www.pnas.org/doi/10.1073/pnas.2118631119
That’s obvious by examining all the geriatrics running the country who were alive prior to the implementation of these bans.
so they only banned it cuz it affect wealthy people then?