The last article in NEJM’s remarkable sodium package is an extraordinary analysis attempting to estimate the number of deaths that can be attributed to excess sodium intake.
The authors reviewed 205 studies of dietary sodium consumption:
- 142 studies that used 24-hour urine collections
- 91 with estimates of dietary intake
- 28 with both methods
However, the evidence on health outcomes is not consistent with efforts that encourage lowering of dietary sodium in the general population to 1,500 mg/day. Further research may shed more light on the association between lower—1,500 to 2,300 mg—levels of sodium and health outcomes.