It seems more likely that the supposedly "heart healthy" seed oils are causing heart disease.
The Carnivore Code has some very good insights (at least in my opinion) [1]
And this talk on how seed oils are destroying our health is also pretty interesting: https://www.youtube.com/watch?v=7kGnfXXIKZM
[1] https://www.amazon.com/Carnivore-Code-Unlocking-Returning-An...
https://www.amazon.com/Carnivore-Code-Unlocking-Returning-An...