People have been speculating about why the 'blue zones' of the world have such old populations This preprint offers a fascinating new hypothesis - simple recording errors and/or fraud https://www.biorxiv.org/content/10.1101/704080v1 …
It's interesting because I've read a few critiques and so far nothing that addresses the idea of fraud for this study. Independent verification of age is only as good as the system you use to verify, and the recent Japanese issues paint a very easy example of system flaws