n 1976, the author posted a“Nutrition Consultation Room”sign in acorner of St. Marianna University Hospital. Because non-communicable diseasesresult from incorrect eating habits, their prevention and treatmentfirst requireimproved nutrition and diet. At that time, expectations for the development of newdrugs were high, and only a few patients visited the counseling room.However, as he continued to teach enthusiastically, the effects of the dietappeared and the number of patients visiting the room increased. In recognition ofthe results, the national government has also begun to allow nutritional guidance feeswithin the public medical insurance system.Thefirst reason I chose nutrition was because I knew“preventive medicine”.Doctors who treat illness are certainly noble professions, but I thought that theprofession to create a society where people do not get sick is even more valuable.