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I notice here that the "adequate intake" of sodium is listed as 1500 mg / day.

https://www.canada.ca/en/health-canada/services/food-nutrition/healthy-eating/dietary-reference-intakes/tables/reference-values-elements-dietary-reference-intakes-tables-2005.html

But I found this site which states,
"In ancient times, prior to access to external sources of salt (i.e., salt mines), the level of daily average salt intake was low, approximately 0.1–1.0 g/day (0.04–0.4 g sodium/day)"

That's 40 to 400 mg of sodium, which is a helluva lot less than 1500. I'm convinced we're being fed a lot of BS about sodium.

https://link.springer.com/article/10.1007/s00467-019-04387-4