When we look historically and cross-culturally, we see that old age 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 life expectancy, or the average age to which people can be expected to live, varies dramatically across the world. As Figure 6.1 “Average Life Expectancy across the Globe (Years)” 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).

What accounts for these large disparities? The major factor is the wealth or poverty of a nation, as the wealthiest nations have much longer life expectancies than the poorest ones. This is true because, as Chapter 2 “Poverty” noted, the poorest nations by definition have little money and few other resources. They suffer from hunger, AIDS, and other diseases, and they lack indoor plumbing and other modern conveniences found in almost every home in the wealthiest nations. As a result, they have high rates of infant and childhood mortality, and many people who make it past childhood die prematurely from disease, starvation, and other problems.

These differences mean that few people in these societies reach the age of 65 that Western nations commonly mark as the beginning of old age. Figure 6.2 “Percentage of Population Aged 65 or Older, 2011” depicts the percentage of each nation’s population that is 65 or older. Not surprisingly, the nations of Africa have very low numbers of people 65 or older. In Uganda, for example, only 3 percent of the population is at least 65, compared to 13 percent of Americans and 20–21 percent of Germans and Italians.

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.

Older people now constitute 15 percent of the combined population of wealthy nations, but they will account for 26 percent by 2050.

Pedro Ribeiro Simões – Warming the bones – CC BY 2.0.

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.

References

Hayutin, A. M. (2007). Graying of the global population. Public Policy & Aging Report, 17(4), 12–17.

Population Reference Bureau. (2011). 2011 world population data sheet. Washington, DC: Author.

United Nations Population Division. (2011). World population prospects: The 2010 revision. New York, NY: Author.