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 11 months 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 11 months ago

Not stock, slop.