This book is the first one to examine the cause and effect of elderly people¿s healthy life
expectancy providing models that are easy to understand. The novel point is the success
achieved in constructing a single structural model of cause and effect of healthy life
expectancy. In the final models of the authors¿ studies it was possible to clearly point out
that it is not the case that lifestyle habits including an ideal diet directly provide for
healthy life expectancy.This book is made up of published studies based on scientific evidence
using a vast amount of data based on about 8 000 in-home elderly people tracked longitudinally
from 3 to 6 years three times in all including baseline research in a specific region of
Japan. Therefore health policy makers will be able to use this book as scientific evidence for
creating area programs to promote good health that are focused on healthy longevity as the
central issue. Academic researchers whose special fields are mainly public health will be able
to learn both theory and practice to structurally analyze cause and effect of health factors.
