As life expectancy rises in poor nations, these nations will experience special problems (Hayutin, 2007). One problem will involve paying for the increased health care that older people in these nations will require. Because these nations are so poor, they will face even greater problems than the industrial world in paying for such care and for other programs and services their older citizens will need. Another problem stems from the fact that many poor nations are beginning or continuing to industrialize and urbanize. As they do so, traditional family patterns, including respect for the elderly and the continuation of their roles and influence, may weaken. One reason for this is that urban families have smaller dwelling units in which to accommodate their elderly relatives and lack any land onto which they can build new housing. Families in poor nations will thus find it increasingly difficult to accommodate their elders.
Despite these international disparities, life expectancy overall has been increasing around the world. It was only 46 years worldwide in the early 1950s but was 69 in 2009 and is expected to reach about 75 by 2050 (Population Reference Bureau, 2011). This means that the number of people 65 or older is growing rapidly; they are expected to reach almost 1.5 billion worldwide by 2050, three times their number today and five times their number just twenty years ago (United Nations Population Division, 2011). Despite international differences in life expectancy and the elderly percentage of the population, the world as a whole is decidedly “graying,” with important implications for the cost and quality of elder care and other issues.
Over population essay Essays on the Environmental History of India has dealt with all of this at length This book is the outcome of seven long essays penned by scholars from
Source: Adapted from Population Reference Bureau. (2011). The world at 7 billion: World population data sheet: Life expectancy. Retrieved from .
When we look historically and cross-culturally, we see that is a relative term, since few people in preindustrial times or in poor countries today reach the age range that most Americans would consider to be old, say 65 or older. When we compare contemporary societies, we find that , or the average age to which people can be expected to live, varies dramatically across the world. As illustrates, life expectancy in North America, most of Europe, and Australia averages 75 years or more, while life expectancy in most of Africa averages less than 60 years (Population Reference Bureau, 2011).