Comment by lathyrus_long

The p values are small enough that the correlation seems likely to be real, even after lots of dredging through that dataset. I'm less sure about the causality, though. It's also possible they've just discovered that richer people (a) live longer, and (b) like organic produce. They controlled for various factors (note 1 on table 2), but none that seem like usefully strong proxies for income or wealth.