There are various neurological diseases that negatively affect human life. Alzheimer’s disease, Parkinson’s disease, epilepsy, depression and migraine are among these diseases and they cause a wide variety of problems in people. It is known that the element Mg is involved in many metabolic events in the body. It regulates blood sugar level, blood pressure, heart rhythm, muscle contraction and provides signal transmission. It serves as a cofactor in the structure of many enzymes . It has been reported in many studies that it also plays key roles in the brain and neurological organs. Mg has an antidepressant effect. It reduces depressive symptoms. It strengthens memory and learning by helping synaptic communication. It increases the effectiveness of antipsychotic drugs.