When the Institute of Medicine recommended broad, draconian regulation of salt last year, I pushed back against the idea, one might say, obsessively. Now, via Marion Nestle, comes a new paper in The American Journal of Clinical Nutrition arguing that the current level of sodium intake is not a problem for the population. The article comes with an accompanying editorial titled “Science trumps politics: urinary sodium data challenge US dietary sodium guideline” that closes with this appeal:
The analyses of extensive measurements of 24-h UNaV, which these 2 reports have collected from the medical literature over the past 5 decades, are compelling. They provide plausible, scientific evidence of a “normal” range of dietary sodium intake in humans that is consistent with our understanding of the established physiology of sodium regulation in humans. This scientific evidence, not political expediency, should be the foundation of future government policies, thus respecting the known and unknown scientific complexities surrounding sodium’s role in health and disease. Guidance for sodium intake should target specific populations for whom a lower sodium intake is possibly beneficial. Such an approach would avoid broad proscriptive guidelines for the general population for whom the safety and efficacy are not yet defined. An appropriate next step is not to lower the sodium guideline further.