ABSTRACT
Today, Japan is known as a society in which many people enjoy longer healthy aging. For example, there are increases in healthy life expectancy, the average number of years that a person can expect to live without disabilities such as hearing loss, visual impairment, or mental disorders. Whereas healthy life expectancy averaged 59 years for the world’s population in 2007, it was 76 years in Japan (World Health Organization, 2010).
