Relevant research that just won an ig nobel prize.
tl;dr: they don’t live longer, they just don’t report their dead relatives and pocket the pensions.
https://www.medicalrepublic.com.au/maybe-its-the-mediterranean-diet-maybe-its-pension-fraud/110766
The blue zone’s fraudulent claims has debunked:
Maintaining activity is associated with lower mortality.
https://jamanetwork.com/journals/jama/article-abstract/282655
Differences in all-cause mortality risk associated with animal and plant dietary protein sources consumption
https://www.nature.com/articles/s41598-023-30455-9
Social relationships and physiological determinants of longevity across the human life span
https://pmc.ncbi.nlm.nih.gov/articles/PMC4725506/
Plant-based diet and risk of all-cause mortality: a systematic review and meta-analysis
https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2024.1481363/full
This maybe a bit, but it’s hard to do, you have to hide the bodies of your deceased ones, it’s not so easy.
Low natality plays a more important factor, it’s hard for people to die young, if there aren’t many young people anymore.
