Blue Zones, taken seriously in both directions
Five regions were identified as places where people appeared to live unusually long, and a large popular literature grew out of them. Some of what it says is well supported. Some of it is a retrospective reconstruction. And the underlying claim — that these places really do have exceptional numbers of very old people — has been challenged on demographic-data grounds by researchers who take age verification seriously.
Each region has two pages: what the narrative says and what holds up, and a separate page for the debate, where the criticisms are set out in their own terms rather than summarised into a sentence we can wave away.
No region pages published yet
Region pages are published once a named reviewer has signed off both the narrative and the criticism of it.
Why we give the criticism its own pages
The central criticism is not that these are unpleasant places to live or that vegetables are bad for you. It is narrower and harder: that claimed ages in populations without reliable birth registration are systematically overstated, that administrative incentives such as pensions can produce clusters of apparent extreme longevity, and that some of the dietary patterns attributed to these regions were reconstructed decades after the fact. Those are arguments about data quality, and the only honest way to handle them is to state them properly and let a reader weigh them.