"Dietary guidelines often change, but “restrict your salt intake” has resisted the advances of science. The National Academy of Medicine recently reiterated its advice to limit daily sodium intake to 2,300 milligrams (a little over a teaspoon of salt), or 1,500 milligrams for those at risk of cardiovascular disease. …Understanding the stark contrast between the National Academy of Medicine’s recommendation and what science has identified as sodium’s healthy range is critical to the nation’s health. Minimal decreases in serum sodium predict increased mortality in healthy people."