EESA10H3 Lecture Notes - Environmental Health, Social Environment, Diarrhea

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Published on 28 Jun 2012
Lecture 1: Human Health and the Environment
Your environment is your health (but not the only factor influencing your health)
What is environmental health?
According to the WHO: “In its broadest sense, environmental health comprises those aspects of
human health, disease and injuries that are determined or influenced by factors in the environment.”
This includes the study of both the direct pathological effects of various
oSocial Environment
(housing, urban development, land use and transportation)
What is the environment?
Environment is everything that affect a living organism
Effect of environment on human health is so great
oManmade environment
The Environment
We cannot choose what happens in the natural environment but sure can help in changing the events
that take place in the environment
Social environment – are stressed even though we do not know about it which affects health
Our health is affected by our environment
Most of them we can list some we neglect
Definitely know that the environment affects our health greatly
Factories, buildings and sewage comprise to form an artificial environment
We face the growth of the human population
Population is growing very fast – exponentially
Our consumption has increased incredibly because of the population
In a couple of decades the number of people on the planet will exceed the sustainable number of
people the earth can hold
Cannot support because of resources and the environment
We are using renewable and nonrenewable resources faster than they can grow
Renewable resources (trees, water) and non renewable resources (fossil fuels, oil, coal)
The bigger question is can the resources of the earth be replenished at this rate of growth?
A change in the earth is done so by humans – a form of alteration
We are aware of issues of environmental health concerns
Due to economic growth people are drawn to money and earning and seem not to take notice of the
destruction on their health
There are some people that have attempted to protect the environment
The first public health practices were installed at the end of the 19th century when there was an
outbreak in cholera
It was instigated by a contaminated sewage water supply
This resulted in people drinking polluted water which contributed to them getting very sick and in
many instances led to death
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