Air pollution and health
Medical research has barely
begun to touch the tip of the iceberg, with regard to modern health problems,
directly related to air pollution.
What is air pollution?
Air pollution takes place when
the atmosphere becomes contaminated with unusual chemicals, particles of matter
or different kinds of biological material, not normally found in the
atmospheric system. Pollutants can take the form of natural gases, like those
erupting from a volcano or man-made gases like carbon monoxide, emitted from
motor vehicles. They can also be liquids like chlorine or solid particles, like
dust or ashes.
The atmosphere supports all
life on earth and when its natural, gaseous system is compromised or destroyed
by pollutants, ozone depletion takes place. Stratospheric changes affect the
environment adversely and living organisms are affected, including human
beings, as well as plant and animal life. Air pollution presents a serious
threat to human health and life, because the ecosystems are interdependent and
what affects one ecosystem adversely, affects others. (2)
What are some of the modern day
health problems directly related to air pollution?
These may include asbestosis,
which is an inflammatory lung condition that results from prolonged exposure to
asbestos and causes dyspnea or shortness of breath. Mesothelioma is a rare form
of cancer that occurs with asbestos exposure. While lung cancer is attributed
to air pollution, there is growing concern about other kinds of cancer. Lung
cancer may be suspected, where there are the symptoms a chronic cough and
wheezing, associated with chest pain.
Another modern health problem
related to air pollution has been identified as Legionaire's disease,
associated with mold and dust contaminants found in air conditioning systems,
particularly those that have become outdated.
Cardiopulmonary disease (COPD)
including chronic bronchitis, emphysema and asthma are attributed to breathing
fine particle air pollutants, like those inhaled when people are smoking.
Pneumonia and other lung
diseases may be attributed to air pollution, in conjunction with other
infectious elements.
Respiratory allergies are common
in highly polluted areas.
Children diagnosed with cystic
fibrosis, demonstrate increased mucous hyper-secretion when living in highly
polluted areas. Other children may manifest increasing evidence of the symptoms
of asthma, croup, pneumonia or other lung infections. Newborn infants living in
highly polluted areas, may have a low birth weight.
Symptoms of exposure to air
pollution can include difficulty breathing, wheezing, coughing, reduced lung
function and increased mucous production.
In terms of cardiovascular
disease, there may be vascular dysfunction, thrombus formation or heart attacks
that lead to premature deaths, a result of air pollution. (2)
There are those who suggest
that only the respiratory and the cardiovascular system of the human body are directly affected by air pollution. When one considers the human
body as a whole, if one part of the body is affected in a negative way by air
pollution, the rest of the body may be adversely affected, as well.
This is because both the blood
and the oxygen travel throughout the entire body and when they are exposed to
pollutants, damage can occur to other parts of the body. This includes damage
to other systems, like the nervous system, which is highly vulnerable to
chemical exposure. Any part of the digestive system can be affected and so can
the circulatory system.
The people who are at the
highest risk for having problems associated with air pollution, appear to be
the elderly and those with pre-existing cardio-respiratory problems. Children
and newborns are highly susceptible to medical problems related to air
pollution, because of their body size and body weight, in relation to their air
intake. (3)
Age, health status and genetics
all play an important role with respect to individual reactions to air
pollution, but other factors like the nature of the pollutant and the degree of
exposure must be considered. (4)
It becomes increasingly
important for each person to protect himself or herself from exposure to air
pollution, although that is not always possible.
Ongoing education about modern
health problems, directly related to air pollution is crucial to protect the
health of people everywhere. It is also increasingly important for the causes
of air pollution to be identified and eliminated wherever possible.
(1) http://en.wikipedia.org/wiki/Air_pollution
(2)
http://www.hc-sc.gc.ca/ewh-semt/air/out-ext/effe/health_effects-effets_sante-eng.php#a5
(3) Ibid.
(4) Ibid.
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