What is the basis for environmental epidemiology?

What is the basis of epidemiology?

Epidemiology is based on two fundamental assumptions. First, the occurrence of disease is not random (i.e., various factors influence the likelihood of developing disease). Second, the study of populations enables the identification of the causes and preventive factors associated with disease.

What is meant by environmental epidemiology?

The Committee on Environmental Epidemiology has adopted the following definition: Environmental epidemiology is the study of the effect on human health of physical, biologic, and chemical factors in the external environment, broadly conceived.

What is an example of environmental epidemiology?

For example, an RR of 1.4 for lung cancer after exposure to environmental tobacco smoke indicates that exposed persons are 40% more likely to develop lung cancer than are non-exposed persons. The strength of association must often be considered in relation to the population at risk and intensity of the exposure.

What are the components of epidemiology?

The epidemiologic triangle is made up of three parts: agent, host and environment.

What are the 5 main objectives of epidemiology?

In the mid-1980s, five major tasks of epidemiology in public health practice were identified: public health surveillance, field investigation, analytic studies, evaluation, and linkages.

IT IS INTERESTING:  Why are coastal ecosystems so important to ocean life?

What is environment and environmental pollution?

Environmental pollution is defined as “the contamination of the physical and biological components of the earth/atmosphere system to such an extent that normal environmental processes are adversely affected.

Why is epidemiology important to the study of environmental health problems?

Epidemiology is important to the study of environmen- tal health problems because (1) many exposures and health effects associated with the environment occur at the popula- tion level; (2) the epidemiologic methods of natural experi- ments and observational techniques are appropriate; (3) the study designs used in …

What epidemiology means?

By definition, epidemiology is the study (scientific, systematic, and data-driven) of the distribution (frequency, pattern) and determinants (causes, risk factors) of health-related states and events (not just diseases) in specified populations (neighborhood, school, city, state, country, global).

What are environmental contaminants?

Environmental contaminants are chemicals that accidentally or deliberately enter the environment, often, but not always, as a result of human activities. Some of these contaminants may have been manufactured for industrial use and because they are very stable, they do not break down easily.

Why is epidemiology important?

When a disease occurs in a population, epidemiologists help us to understand where the disease is coming from, and who it is most likely to impact. The information gathered can then be used to control the spread of the disease and prevent future outbreaks.