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## Life Span

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### Life Span &Life Expectancy Done: by Deidre Brown Life expectancy Life expectancy is a statistical average of the number of years a human is expected to live. – PowerPoint PPT presentation

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Title: Life Span

1
Life Span Life Expectancy
• Done by Deidre Brown

2
Life expectancy
• Life expectancy is a statistical average of the
number of years a human is expected to live.
• This is the average amount of years that an
individual has before he or she dies. Which
begins from the pre-natal period to the
senescence period (old age)

3
Life Span
• This is the maximum time period of a individual
that is observed within a group

4
Factors Influencing life Span life Expectancy
• Availability and cost of medical care - This
factor mostly affect persons who are below the
poverty level. Seeing that health is expensive
and individuals cant offered health insurance or
medicine to aid in the treatment of sickness or
dieases.

5
• Health and sanitation levels- if a country has
high level of improper disposal of solid waste,
industrial waste and untreated sewage. This will
result in the country having high levels of air
borne and water borne diseases. This will affect
both the elderly and the adolescence.
• Poverty-Poor people can't afford healthy food,
clean drinking water, top-notch medical care so
this will cause persons to commit suicide or be
involve in theft related crimes. Which leads us
to our next factor.

6
• Violence- this reduces the life span and life
expectancy by the continuous increase in the
level of violence in each country
• Lifestyle- If you are gay, are an IV drug user
or engage in other types of high risk behavior,
you reduce your life expectancy substantially

7
• Genetic Disease- these are diseases that are
passed down from one generation to the next.
Example of these are cancer, diabetes
hypertension etc

8
Calculating life expectancy
• Life expectancy is calculated using a statistical
tool called a life table. A life table is
generated from current age- and sex-specific
death rates in a given population. The resulting
values are used to estimate the likelihood of
someone in a hypothetical population dying before
their next birthday.
• Calculating a persons life expectancy is based
on death patterns in the population, and assumes
that current death rates will persist throughout
that persons life.

9
figure 1.Life expectancy (years) at birth by
sex, 19011910 to 20102012
10
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