The most interesting finding is that the non-DHA effect is much stronger than the DHA effect. This doesn't align with the mechanistic explanation. Either this this is a novel and interesting result, or it's more evidence that we're just measuring wealth and health consciousness.
Observational studies like these are useful for guiding future research, but, on their own, they're essentially useless for informing lifestyle changes.
Observational studies like these are useful for guiding future research, but, on their own, they're essentially useless for informing lifestyle changes.