A patient died from brain swelling caused by a sodium deficiency noted in her charts 6 weeks earlier yet left untreated.

Sodium deficiency exists in grazing animals where soil sodium levels have been depleted by leaching.

See Sodium deficiency.

The research uncovered a primary sodium deficiency through much of the region and this part of his research novely integrated with sociological research formed the basis of his Doctor of Philosophy, which was granted by the University of Queensland in 1980.