Not so mysterious....
"The patients are largely undocumented laborers from Mexico and Central America working in construction, roofing and outdoor trades in extreme heat – jobs where water breaks are often limited"
https://www.yahoo.com/news/us/articles/mysterious-disease-sending-young-healthy-110033839.html
I wonder if that's a common underlying condition that is widespread, but only manifests when workers don't get adequate fluids.
It sounds like some of the stories of rhabdo you hear about in ultrarunning.
Jeff Bezos has to drink too.
https://th3core.com/chat/index.php?topic=15056
>common underlying condition that is widespread
Yes, by race and/or ethnicity
"If you are of African, Hispanic, or Latino, Asian, or Native American descent, you are at higher risk for kidney disease."
Understanding kidney disease risks by race and ethnicity
https://www.kidneyfund.org/all-about-kidneys/risk-factors/understanding-kidney-disease-risks-race-and-ethnicity
<+>
IIRC, aboriginal people drew the short straw and have the lowest number of nephrons.