An interesting study:
https://www.lifespan.io/news/a-correlat ... longevity/
"The surprising facts about this study were found in the bloodwork, as four fatty acids were found to predict mortality by substantial amounts. These were myristic acid, behenic acid, omega-3, and, negatively, palmitoleic acid."
This is just one study, of course. And I also wonder whether the impact of these fatty acids could be different in APOE4.