It turns out that not all researchers think advocating a low-sodium diet a good idea, especially with studies like the 2010 Harvard study which linked low-salt diets to an increase in insulin resistance, and the fact that some studies demonstrate that there are more deaths among those put on a low-sodium diet. Salt is an essential. It’s important from birth to old age. Wars have been waged in order to get salt, Old world tribes drink animal blood to get sodium when salt it not available. Our brains, adrenals, and digestion need salt to work correctly.