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Lecture

Week 1 Lecture


Department
Environmental Science
Course Code
EESA10H3
Professor
Jovan Stefanovic

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Environmental Health Threats
Your environment is your health (but not the only factor influencing your health)
What is environmental health? (1)
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.
What is environmental health? (2)
According to the WHO: This includes the study of both the direct and the indirect
pathological effects of various:
o chemical
o biological
o social agents (housing, urban development, land use, transportation)
o physical
Types of hazard
Chemical hazards (chemicals in air, water, soil and food)
Biological hazards (bacteria, viruses, parasites, allergens, animals such as bees and
poisonous snacks)
Cultural (social) hazards (unsafe working conditions, poor diet, drugs, drinking,
driving, poverty)
Physical hazards (radiation, fire, tornado, hurricane, volcanic eruption, earthquake)
Chemical hazard, Biological hazard, Cultural (social) hazard, Physical hazard
What is the environment?
Environment is everything that affects a living organism
Effect of environment on human health is so great
o Air
o Water
o Soil
o Manmade environment (Created by society)
Environmental crisis: Human alteration of Earth
Atmosphere:CO2 increased 30% since the beginning of the Industrial revolution
Geosphere: 1/3 to 1/2 of the land surface has been transformed by human action
Biosphere, Industrialization, Overpopulation: overconsumption
The declining health of other organisms is the clearest indicator of environmental threats to
human health
No single factor is responsible:
Increase UV
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