While this is definitely a possible explanation, I would hesitate to jump to any particular conclusions until further research is done on specific risk factors.

While this is definitely a possible explanation, I would hesitate to jump to any particular conclusions until further research is done on specific risk factors. The article also mentions air pollution as a possible cause: >For example, a 2019 study found that Asian Americans breathe in 73% more tiny pollution particles than white Americans, most likely because of greater exposure to construction, industry and vehicle emissions where they live. As you mention, there is some preliminary research which suggests cooking oil smoke could be related, but this is far from enough to definitively point towards it as the root cause, or even enough to justify your hunch I would argue. Also keep in mind there could be multiple causes of which cooking oil is just one part.