Oxygen therapy in a hyperbaric chamber helps in the treatment of respiratory diseases such as migraine, depression, Alzheimer’s disease, and Parkinson’s disease. Oxygen therapy by oxygenating nerve cells improves brain tissue renewal and accelerates the process of psychomotor reeducation. The effect of the therapy is visible after a few minutes and is permanent. Oxygenation of tissues, increasing the oxygen pressure in the blood during surgery cause an improvement in mood, which in turn is used in the treatment of depression, especially respiratory.