Notice how I said SOUTH, and how the article notes the same issue in Indian Americans
but the article explains that the issue affects women from several different Asian American backgrounds, not just Indian Americans
Edit - however sibling comment seems to indicate that East Asians use Rapeseed Oil which presents similar issues, so you might be onto something
They use caiziyou, AKA roasted rapeseed oil, which has a high level of erucic acid, similar to mustard oil. (Rapeseed is a member of the mustard family. Canola is low-erucic acid rapeseed oil.)
Canola: CANadian Oil Low Acid
Rapeseed oil for cooking is a staple in Germany.
If erucic acid or its thermal products are the cause, there would also be many cases of lung cancer in Germany.
I think this is a naming thing, canola is an English word for a variety of rapeseed, and IIUC Germany uses the same food-safe version.