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Re:Study links omega-3s to improved brain structure, cogniti... by jallen_dot_dev on Friday October 07, 2022 @12:21AM (#33117412)
Abstract says they adjusted for potential confounders. Presumably wealth was one of them, as that seems like an obvious thing to control for in any health study.
Re:Study links omega-3s to improved brain structure, cogniti... by civilized on Friday October 07, 2022 @08:07AM (#33120130)
Or maybe o3's lead to intelligence which leads to wealth, and controlling for wealth would underestimate the true effect of o3's.

I have no dog in this race :)