HLTB01H3S: Health, Aging and the Life Cycle
Department of Health Studies
University of Toronto at Scarborough
Instructor: Anna Walsh.
Term: Fall 2008 Mondays 3 p.m. - 5 p.m.
Lecture Room: Room AA112
The Aging of the Population.
A&G: Chapter 2 -Demography of Aging.
•There has been a dramatic change in population demographics in the last century
that continues to provide ongoing challenges for health care providers to provide
adequate services to the increasing number of older adults in the world.
Population Aging in the United States:
•In 1905, children and young people represented a large segment of the population
with only a small percentage of individuals of 65 years of age and older.
•This created a pyramid-shaped population profile, which results from high
fertility rates and high mortality rates
•It is projected that as many as 70 million people in the US will be 65 years and
older by 2030
•In 1900, there were only approximately 100,000 people who were over the age of
85 in the United States. The probability of reaching 100 years of age improved
during the 20th century. In 1879, a person had a 1/400 chance of living to be 100
years old, but as of 1980, there was a 1/87 chance to living to 100.
•85+ is the fastest growing portion of the older population (3.1 million in 1990, to
4.2 million in 2000)
•Total Dependency Ratio (TDR) compares the number of economically
nonproductive citizens (below 18 and above 65 years) with the number of
•Equation: TDR = (a+c) / b
a=children <18, b=adults 18 to 65, c=adults 65+