I disagree, I think they need to study specific populations for specific diseases associated with different diets. If you study this across population where this doesn’t matter as much then they will say omega-3 has no effect on nearsightedness, which is bad for the population that needs omega-3.

Omega-3 saved me from the fate of my family, dying from a heart attack before I was 50.

And I see this need in my genetics, specifically FADS1 FADS2 polymorphisms that make me need higher chain omega-3 fatty acids like from seafood.