A study by the journal of General Internal Medicine found a higher rate of cardiac events and death with patients put on low-salt diets.
A 2010 Harvard study linked low-salt diets to an increase in insulin resistance, a precursor to Type 2 diabetes.
Another study showed that babies with low birth weights are also born with low sodium in their blood serum because their mothers didn't get enough salt in their diet. This low sodium at birth may cause poor neurodevelopment function between the ages of 10 and 13.
A paper by Harvard researchers showed that while hypertention has increased among Americans over the last 40 years, sodium consumption has remained flat.
Another study showed that when the body ages, kidneys retain less sodium and therefore, elderly people with hyponatremia have more falls and broken hips and a decrease in cognitive abilities.
Sources taken from: www.saltinstitute.org