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Lecture 1

EESA10H3 Lecture Notes - Lecture 1: Asthma, Environmental Factor, Geosphere


Department
Environmental Science
Course Code
EESA10H3
Professor
Jovan Stefanovic
Lecture
1

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Lecture 1 Introduction
-Environment is everything that affects a living organism
Models of gene-environment interaction
-Genetic makeup increases exposure to an environmental risk factor
- Genetic makeup increases susceptibility to an environmental risk factor
- Genetic makeup and environmental factor are independent risk factors
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 and the indirect pathological effects of
various:
Chemical
Biological
Physical (Man-Made)
Housing,Land use,Transportation, Urban development
Chemical Hazards
e.g.Chemicals in air, water, soil, and food
Biological Hazards
e.g.Bacteria, viruses, parasites, allergens, poisonous animals
-Some animals spread biological hazards like viruses
Physical Hazard
E.g. Radiation, fires, tornados, hurricanes, volcanic eruptions, and earthquakes are Natural
Disasters not environmental Health hazards
Social or Behavioral Hazards
E.g. poor diet, smoking, drug use, drinking, and poverty are NOT environmental Health hazards
Genetic Traits
E.g. Health risks associated with the chromosomal defect that causes down syndrome are NOT
environmental health hazards
-We don't all fall ill to certain things because of our genetic makeup that can make us
more exposed to some of the hazards or prone to a disease
-Act independently
Core Concerns of Environmental Health
-Focus on chemical, physical, biological hazards
-Interactions with genetic traits and with social/behavioral stressors
-Emphasis on anthropogenic hazards
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