The researchers found that slightly lower sodium levels in the blood were related to both cognitive impairment and declines in cognitive function over time. (sciencedaily.com)
Go for Himalayan or Celtic sea salt which is mostly still sold in it's natural state with over 80 minerals and a much lower sodium level. (robinskey.com)
It seems it's accepted now that high salt can have adverse effects, «but whether very low sodium levels are beneficial is less well accepted,» she said. (health.com)