[guruz]

My bet is on seed oils :-/

https://www.reddit.com/r/StopEatingSeedOils/

(And also what others posted: plastic, social media etc.)

[creamyhorror]

Complicated topic. Canola and corn oil don't seem associated with increased mortality: (Zhang 2021) https://bmcmedicine.biomedcentral.com/articles/10.1186/s1291...

But we have small indications (Ramsden 2013, 2016) that too much linoleic acid (an omega-6 fat) could be detrimental. At the same time, canola and corn oil are rich in it and aren't correlated with higher risk of death in big observational studies.

Seed oils are probably not as bad as some fear, given that we don't see increased deaths associated with it in observational studies. But you might as well use olive oil (for more omega-3 fat) instead if you can afford it.