Why the study?
Does dietary sodium intake correlate with life expectancy and all-cause mortality?
Does dietary sodium intake correlate with life expectancy and all-cause mortality?
Observational data show a positive correlation between sodium intake and life expectancy, challenging the assumption that dietary sodium is a risk factor for premature death.
Challenges sodium restriction assumptions in observational data; leaves open causality and requires prospective trials before practice change.
Our observation of sodium intake correlating positively with life expectancy and inversely with all-cause mortality worldwide and in high-income countries argues against dietary sodium intake being a culprit of curtailing life span or a risk factor for premature death. These data are observational and should not be used as a base for nutritional interventions.
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Messerli et al. (2020) studied this question.
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