A global perspective on the impact of demographic changes
on family life
The impact of changing life expectancy upon the family
In many modern societies life expectancy has increased dramatically over the last
fifty years for a variety of reasons. This trend has led to some sociologists to reflect
on the impact that this social change may be having on family structure and
dynamics. In particular, some sociologists are now paying attention to the role of
grandparents and the positive contribution that some now make to the experience of
childhood. This section will therefore examine why death rates have fallen and life
expectancy has increased and their implications for family life. Moreover, a range of
sociological research on the role grandparents play today in families especially with
regard to their grandchildren will be considered.
Explanations for the decline in death rates and rise in life expectancy
In many modern societies death rates dramatically fell during the course of the 20th
century because rising wages increased living standards, particularly the quality of
diet and housing, and lifted people out of poverty (which many sociologists agreed
was a major cause of death). Moreover, many governments took on the
responsibility of looking after their citizens from the cradle to the grave by creating
public health programmes, investing in public health – clean water supplies and
sanitation systems which safely removed sewage (which was a major cause of water–
borne diseases) and public hygiene programmes which made clear the link between
germs, disease and lack of cleanliness. Governments also invested heavily in health
care especially maternal health care which significantly cut the maternal and infant
death rates as well as the mass vaccination of children to protect them against
measles (a major killer in 19th century western societies). Advances in medical
technology, drugs and surgery now mean that people are more likely than ever to
survive cancer, heart disease and other life-threatening diseases. consequently life
expectancy in many societies has increased.
The dramatic decline of death rates and a parallel fall in women’s fertility (they are
having fewer children) have led to an ageing population in many modern societies.
For example, in Japan, 26 per cent of the population is over 65 years old and in Italy,
22 per cent of the population is over 65 years old. In the USA, about 15 per cent of
the population is aged over 65 and this population is expected to nearly double from