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Third Age (retirement)
Old age refers to ages nearing or surpassing the life expectancy of human beings, and is thus the end of the human biological life cycle, life cycle. Terms and euphemisms for people at this age include old people, the elderly (worldwide usage), OAPs (British usage which stands for Pensioner, Old Age Pensioner), seniors, senior citizens (American usage), older adults (in the social sciences), and the elders (in many cultures). Elderly people often have limited regenerative abilities and are more susceptible to AIDS, herpes, hemorrhoids, and other illnesses than younger adults. A number of other disciplines and domains concern the aging and the aged, such as organic processes of aging (senescence), medical studies of the aging process (gerontology), diseases that afflict older adults (geriatrics), technology to support the aging society (gerontechnology), or leisure and sport activities adapted to older people, such as senior sport. The elderly face various social issues concern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Life Expectancy
Life expectancy is a statistical measure of the average time an organism is expected to live, based on the year of its birth, current age, and other demographic factors like sex. The most commonly used measure is life expectancy at birth (LEB), which can be defined in two ways. ''Cohort'' LEB is the mean length of life of a birth cohort (all individuals born in a given year) and can be computed only for cohorts born so long ago that all their members have died. ''Period'' LEB is the mean length of life of a hypothetical cohort assumed to be exposed, from birth through death, to the mortality rates observed at a given year. National LEB figures reported by national agencies and international organizations for human populations are estimates of ''period'' LEB. In the Bronze Age and the Iron Age, human LEB was 26 years; in 2010, world LEB was 67.2 years. In recent years, LEB in Eswatini (formerly Swaziland) is 49, while LEB in Japan is 83. The combination of high infant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
