Abstract
Backgrounds and Objectives: In Kyusyu, Japan, there is a 112-year old Japanese male, the world oldest man who is receiving no special care. In order to investigate psycho-somatic medical features of this rare case, we did research on him. Subject and Method: Here we approached him by medical examinations, present nutritional and psychological/ psychiatric analyses. Results and Conclusions: Almost every day, he drinks milk, eats balanced foods, writes a diary, and walks moderately in the house, which might have led him to both physically and mentally healthy conditions.