Textbook Notes (280,000)
CA (170,000)
UTSC (20,000)
HLTC22H3 (100)
Chapter 2

HLTC22H3 Chapter Notes - Chapter 2: Cardiovascular Disease, Dependency Ratio, Jeanne Calment

Health Studies
Course Code
Anna Walsh

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Chapter two Notes
· In the beginning of the 20th century there were many young people
but by the end there are a lot of middle aged and old people
This will create problems for some government structures because they
have to tackle this new problem of old age and also the fact people are
from different backgrounds
· Aging is not entirely genetic, it can be influenced by the
Population Aging in US
· 1905 US had lots of young peeps
· 1975 there was more people between 10-30 (baby boomers) and also some
more people at the top as old people were living longer
· There were fewer people in the ages of 35-45 who were born during the
· Hence in the 2000 consensus, the growth of old people (12%) was less
than that of the whole population (13.2%). But expected to change when the
baby boomers reach 65 in 2011
· Hence by 2030, 70 million people will be 65+. The demographic profile
will change from a pyramid shape to a rectangle, which is argued to be a
positive point as it entails more prosperous and more politically stable than the
classic pyramid shape.
· In 1900 there were about 100,000 people 85+, but by year 2050 it
estimated to reach 18.9 million
· In 1980 about 14,000 centenarians but in 2000 there was 50, 454. 4 out of
5 were women.
· A person born in 1879 had a 1/400 in becoming a centenarian, in 1980 that
ratio climbed to 1/87
· Even despite the rising in elderly, the young and middle aged will still
outnumber them. Hence the amount people of working will outweigh the
dependant older people.
· Total dependency ratio (TDR): compares the number of economically
nonproductive citizen (under 18 over 65) with the number of working-aged
adults. Note that this a rough estimate as there are many variability in working
ageEquation: TDR: ( [18-] + [65+] / [18-65] )
The age ratio dependency is rough estimate of the number of people who need to
be supoorted by worker
Equation: TDR= (a+c)/b
o.a= children < 18
ob= adults 18 to 65
oc = adults 65 and older
· This equation does not translate into dollars spent
· Life expectancy of a male is 74 and female about 79 if born in 1999
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