Oil development in the Amazon basin of Ecuador : the popular epidemiology process
San Sebastian, Miguel;
(2001)
Oil development in the Amazon basin of Ecuador : the popular epidemiology process.
PhD thesis, London School of Hygiene & Tropical Medicine.
DOI: https://doi.org/10.17037/PUBS.00682309
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Recent decades have witnessed an increasing corporate access to and control over natural
resources resulting in environmental degradation, inequalities and ill health. Since 1972, oil
companies have extracted more than two billion barrels of crude oil from the Ecuadorian
Amazon. During this process, millions of gallons of untreated toxic wastes, gas and oil have
been released into the environment. Indigenous federations, peasants movements and
environmental groups have claimed that contamination has caused widespread damage to
both people and the environment.
This thesis tells the story of how the relationship between local organisations and research
institutions developed around an epidemiological study constructed to address communities'
concerns. Local organisations set the agenda of the research: they were involved in the
hypothesis formulation, consulted in each step during the study and responsible of the
dissemination of the findings. This process is known as popular epidemiology.
The epidemiological study examines the impacts of oil development practices on the
environment and health of residents living in the proximity of oil fields. These residents were
exposed to high concentrations of oil chemicals in water used for drinking, washing and
bathing. The study suggested a higher risk of spontaneous abortions (POR: 2.47; 95% CI:
1.61-3.79) and adverse health effects such as skin mycosis, itchy nose and sore throat
(p<0.05) among women living near oil fields. An excess of cancers among the male
population was found in a village located in an oil producing area.
Practical and personal issues and dilemmas faced during the research process are discussed
with emphasis on the communication and dissemination of the findings. The thesis concludes
the need of alliances between communities and researchers in order to protect health and
environment. Popular epidemiology is an essential approach for public health researchers to
reaffirm their roots in improving public health as a primary value.