Introduction Measured life expectancy can be measured by mortality and morbidity (Molla). Mortality includes mortality, and incidence is included in life expectancy if research is focused on personal lives rather than death. According to the survey (Perenboom), the incidence of life expectancy is called healthy life, the measured value used for measuring healthy life is health. Lifespan is divided into two or three groups based on health years and non-healthy years (Wood) when focusing on the average of healthy life rather than total life span.
The average life expectancy never increases. There has never been a steady increase in the average life expectancy throughout the century, including the century we are currently living in. Mortality variation is a normal and consistent part of the human mortality dynamics. In fact, life expectancy has not increased even in this century. This indicates that our path is very difficult. Longevity is basically not determined by the past but by our biology. I am optimistic that I can improve many of the suppression effects on life expectancy by developing behavioral correction, biomedical techniques, and development of aging interventions. But before these miracles of the 21st century are invented and disseminated, the available evidence suggests that the average life expectancy of the United States quickly stabilizes and even begins to decline. During the rest of the century, it certainly will not continue to rise or fall.
Meanwhile, the average life expectancy has been rising rapidly over the years, and the government has taken measures to lower the retirement age every other year. In the United States, the life expectancy is 78 years old, and the retirement age as of 2015 is 66 years old. People may tend to adapt to a higher retirement age on a global scale but this means that the fact that the majority of the population faces retirement age has only to depend on the wealth they accumulated It is not something to deny. How long can you adapt to extension of life and retirement age?