1982 年 31 巻 3 号 p. 201-204
In the long history of man this is a most important period as it is the time during which the question whether or not man will be able to continue to exist peacefully over the next hundred years will be determined. In Japan also, now is the time which will determine whether or not we can continue to maintain the prosperity we enjoy today as country.
In this unstable state of the world the question of what is essential for the people of this small country lacking in natural resources to manage is probably being discussed from various points of view, political, economic, scientific, etc. From the medical point of view, I believe one of the most important topics is the problem of the aged. At the present the life span of the Japanese is nearly the greatest in the world, second only to that of Iceland. This is of course semething for which we are grateful however the average age of our nations is increasing more rapidly than anywhere in the world. In the next 50 years 1 in every 5 persons will be 65 years of age or older. This is a very serious problem.
In the future Japanese society it shall be necessary that man regardless of his age should maintain his health and a reason to go on living such that he remains a contributing member of society.
Based on these premises I'd like to discuss the following topics, introducing also areas of my own research.
1. Change of age-pattern of our nation
2. Until what age can man live?
3. What is longevity?
4. Measures for the maintenance of the health of aged-psycological aspects, daily life, diet, etc.