Hyperkalemia and Hyperdopaminemia along with Psychological Modification Induced by an Obsessive Eating of Banana in an Anorexia Nervosa Adolescent pp. 289-304
Authors: (Naoko Narita, Mami Tazoe, Masaaki Narita, Institute of Education, Bunkyo University, Koshigaya-City, Saitama, Japan)
Abstract: Bananas are known as a dopamine-rich and potassium-rich food, however no previous data regarding biochemical or psychological alteration induced by excess intake of bananas has been reported. We encountered a female adolescent patient with anorexia nervosa, who was obsessed by an extremely restricted eating habit. As a result of ingesting nothing but a maximum of 20 bananas and less than 500 ml of mineral water per day for more than two years, she exhibited biochemical and metabolic disorders such as hyperkalemia, hyperdopaminemia, and pseudoaldosteronism. The patient also showed a drastic change in her psychological state, represented by decreased anxiety and increase in inner-impulse. Based on the biochemical changes seen in the patient, the accumulation of free dopamine due to obsessive banana ingestion was the most likely cause of her altered psychological state. When the patient resumed eating other food items after 26 months of obsessive and restricted banana ingestion, the abnormalities in her blood values and her psychological state were corrected to that of the pre-obsessive eating period. We conclude that in this case, an obsessive and restricted eating habit of banana ingestion modulated her biological and psychological homeostasis.
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