Obligatory reminder about correlation != causation, as indicated in the article itself:

> However, as this was an observational study, the findings demonstrate associations rather than cause-and-effect relationships.

More: https://en.wikipedia.org/wiki/Correlation_does_not_imply_cau...

People don't need this reminder on Hacker News. Maybe on Reddit, but even there it's dogma repeated by damn near everyone.

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