The use of magnesium threonate for the treatment of a neurological disorder. The magnesium threonate can be formulated for oral ingestion as a food supplement or foodstuff. The neurological disorder can be dementia, Alzheimers disease, Parkinsons disease, mild cognitive impairment, attention deficient hyperactivity disorder, synaptic density loss, schizophrenia, a neurological disorder that causes fatigue or neurological disorder caused by hypertension.