health and environment
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Health and Environment
Objectives At the end of this session the
participants should be able to conceptualize:
1. health in its physical, mental, social and spiritual context;
2. environment to be an important factor in the interaction of agent and host in the epidemiological or ecological triad;
3. the physical, biological and psychosocial environment and understand their
impact on health.
“Healthy people are those who live in healthy homes on a
healthy diet; in an environment equally fit for
birth, growth, work, healing, and dying... Healthy people
need no bureaucratic interference to mate, give
birth, share the human condition, and die.”
-Ivan Illich
It is a state of complete physical, mental and social well-being and not
merely the absence of disease or infirmity.
Health
It is a condition under which the individual is able to mobilize all his resources, intellect, emotional and physical- for optimum living.
Health
This concept recognizes the strength of social,
economic, political and environmental influences
on health.
HOLISTIC CONCEPT OF HEALTH
Heredity Welfare services
Environment Socio-economic conditions Health and family Life-style
DETERMINANTS OF HEALTH:
Disease is a result from complex interaction between man, an agent and the environment.
From ecological point of view, disease is defined as
“maladjustment of the human organism to the environment”.
Concept of Disease
EPIDEMIOLOGICAL TRIAD
Environment
Vector
Agent Host
Environment(Physical, biological and psychosocial)
Human activities health of individual
ENVIRONMENTAL IMPACT
All of the external factors affecting an organism. These factors may be other living organisms (biotic factors) or nonliving variables (abiotic factors), such as temperature, rainfall, day length, wind, and ocean currents.
The interactions of organisms with biotic and abiotic factors form an ecosystem.
Environment
Macro-environment or the external environment
-is said to be responsible for millions of preventable diseases
originating in it.
Micro-environment -is the Domestic environment in which
man lives.
Internal environment -is some time used for the environment
inside the body
Types of Environment
PHYSICAL: air, water, soil, housing, climate, geography, heat,
light, noise, debris, radiation, etc.
BIOLOGICAL: man, viruses, microbial agents, insects, rodents,
animals and plants, etc.
PSYCHOSOCIAL: cultural values, customs, beliefs, habits, attitudes,
morals, religion, education, lifestyles, community life, health services, social and political organization.
COMPONENTS OF ENVIRONMENT
The environment is all external conditions, circumstances, and
influences surrounding and affecting the growth and
development of an organism or community of organisms.
Environmental health is the study and management of environmental conditions that affect the health and
well-being of humans.
HAZARDS
Environmental Hazards
Environmental hazards may be biological, chemical, physical, psychological, sociological, or site and location hazards.
Biological hazards
These are living organisms or their products that are
harmful to humans.
-Our municipal water treatment facilities are
usually able to purify water by removing these agents or killing them by
disinfecting the water.
A. Water-borne diseases-are diseases that are transmitted in drinking water
-these disease organisms are shed into the water in feces, and can produce illness in those who consume untreated, contaminated water.
Examples:
Polio VirusHepatitis A
VirusSalmonella
Bacteria
ShigellaBacteria
CholeraBacteria Amoebic
Dysentery
Examples:
Giardia(3D model)
Cryptosporidium
Examples:
Polio
Hepatitis ASalmonella
Shigella Cholera AmoebicDysenterae
Examples:
GiardiaCryptosporidium
-are diseases transmitted in or on food
-to protect against food-borne diseases, sanitarians from local health departments routinely inspect food service establishments (restaurants) and retail food outlets (supermarkets) to verify that food is being stored and handled properly.
B. Food-borne diseases
bacteria Salmonellaserotype enteritidis
Escherichia coli 0157:H7
Examples of food-borne agents
-are those transmitted by insects or other arthropods
-improper environmental management can cause vector-borne disease outbreaks.
C. Vector-borne diseases
St. Louis encephalitisLa Crosse encephalitis
They are transmitted by mosquitoes and plague and urine typhus transmitted by fleas.
Examples
Chemical Hazards
It is a result from mismanagement or
misuse of chemicals resulting in an unacceptable
risk to human health.
-that have been manufactured for the purpose of reducing populations of undesirable organisms (pests)
-most pesticides kill non-target organisms as well as the target, or pest species.
-the wise use of pesticides can protect human health and agricultural crops.
A. Pesticides are chemicals
HerbicidesInsecticides
Examples of categories of pesticides
-is an environmental hazard produced by millions that smoke
-diseases associated with ETS include lung cancer and perhaps heart disease
-the EPA has classified ETS as a Class A carcinogen
B. Environmental tobacco smoke (ETS)
-Smoking has been increasingly restricted from public buildings and from many private work sites
-Regulation of smoking seems to be the best approach to controlling this pollutant
-is a naturally occurring element that is used in the manufacturing of many industrial and domestic products
-Health problems associated with the over exposure to lead are anemia, birth defects, bone damage, neurological damage, kidney damage, and others.
-Exposure is by ingestion and inhalation.
C. Lead
-Children are particularly at risk from eating peeling lead paint.
-The prevalence of very high blood lead levels among young children declined significantly between 1984 and 1994 primarily because the removal of lead from gasoline.
-Occupational exposure is a major source of lead intake for adults.
Physical Hazards
It includes airborne particles, humidity, equipment design
and radiation.
Psychological Hazards
are environmental factors that produce
psychological changes expressed
as stress, depression, hysteria.
Sociological Hazards
are those that result from living in a society where one experiences noise, lack of privacy and overcrowding.
Site and Location Hazards
-Natural disasters are geographical and meteorological events of such magnitude and proximity to communities that they produce significant damage and injuries.
-Examples are cyclones, earthquakes, floods, hurricanes, tornadoes, typhoons, and volcanic eruptions.
-The magnitude of devastation of these events can sometimes be great.
-Biological, psychological and sociological hazards may increase following a natural disaster.
The End
Valeroso, Daisy MaeSalino, Sarah Gane MarieAbarca, MarielVelez, NadeneAbes, LiaddyDeguma, CarlDagohoy, SaharaAzote, AllynCeniza, Ching BeeMonding, Anjean
Group 1
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