Using historical data on U.S. childhood blood-lead levels, leaded-gas use, and population statistics, they determined the likely lifelong burden of lead exposure carried by every American alive in 2015.

https://today.duke.edu/2024/12/20th-century-lead-exposure-damaged-american-mental-health

She looks pretty young, but still.

Also, just schooling, lol. US education sucks donkey dick

[–] yeahiknow3@lemmings.world 4 points 1 week ago (1 children)

The photo is stock. They’re in their 40s so it could be lead. The US twin experienced multiple serious concussions, so that alone might explain a 16 point IQ difference.

[–] SplashJackson@lemmy.ca 3 points 1 week ago

Not stock, slop.