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健康と心理学 1
Track 015
Health
子
Life Expectancy
80sec.
'Life expectancy is an estimate of the average number of years
someone will live from their time of birth. Overall, life expectancy
has been on an upward trend around the world. However, life
expectancy is different when looking at 'sex, age, race, and
location. The local environment can also 'have an effect on life 5
expectancy. In less developed countries, life expectancy at
birth is lower 'compared to more developed countries.
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To estimate life expectancy, researchers need 'reliable data. For
example, they need to know the 'population, how many men and
women there are, how rich or poor families are, among other
things. Researchers also need to know data about the "death
rate. Some countries have an efficient system to collect data,
so it is easier to estimate the life expectancy of that country.
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Things that can increase life expectancy in a country are
sometimes very simple. Having access to clean water and
having a clean bathroom is one way to increase the "duration
of life. Another way to increase life expectancy in a country is to
15 expand its wealth. When a country is "affluent, it can "supply
more hospitals and doctors, which then leads to better health
18 outcomes. This is one reason why developed countries have 2
higher life expectancies than less developed countries.
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20.
Humans around the world are achieving prolonged lifespans,
but there are still inequalities between countries that we must
work to overcome.
(234 words)
