«Despite the overwhelming evidence linking
dietary salt to disease in humans, the potential evolutionary advantage of storing so much
salt in the body has not been clear,» says senior study author Jens Titze, who studies the link
between sodium metabolism and disease at Vanderbilt University School of Medicine.
This group were asked to provide urine samples on three separate occasions over a period of nine months to monitor changes in
dietary salt intake, and their neurological health was then tracked for two years,
between 2010 and 2012.