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Public health problems in the Aral Sea region


After irrigation projects diverted water from the Aral Sea it began to dry up and left behind salts, other minerals and toxins in the soil. These not only contaminated the soil but also were picked up by winds and storms, and traveled to other areas, including over crop lands. This has led to increased health problems like respiratory diseases and cancers, among others. The change in the size of the Aral has also affected the local climate and resulted in increased occurrence and worsening of storms.

There is no doubt that the shrinking of the Aral Sea has resulted in health problems for the local community. However, there is debate as to what extent of these problems can be sourced to this environmental situation. The full effects could take a generation to fully materialize and patterns of health problems to show up. Some of the main reasons why the Aral sea area suffered greatly were from "over irrigation and water mismanagement." Environmental impacts resulting from the changes in the Aral Sea region that could affect human health are "the salinization of the water table, pesticides in the environment and food chain, dust storms and air quality."

In the Uzbek region years of monoculture agriculture of cotton fields left soils depleted of naturally occurring minerals and nutrients. This eventually led to an increased use of pesticides and fertilizers to try and counter these new soil deficiencies. However, these increased chemicals found their way into the soils, water, and finally the Aral sea. These types of agricultural activities have also "resulted in widespread soil erosion, chemical pollution, and poor water quality and quantity."

As the sea dries up the contaminants become exposed on the surface and enter into the soil while also being blown into the air. These environmental impacts have had wide-ranging effects on health of local residents. Increases in the occurrence of many diseases and conditions have been noted and linked to the shrinking of the Aral. Facing the highest risk from exposure to contaminants and toxins are infants and children. This has contributed to an increasing infant mortality rate in the area. According to Newbold the infant mortality rate is defined as "the number of deaths of infants younger than one year of age per one thousand births."

Infant mortality rates have been increasing in this region since the 1970s, while elsewhere in the world they have generally been going down. For residents of the Aral sea region living there has led to high "exposure to industrial pollutants such as polychlorinated biphenyl (PCB) compounds and heavy metals but also to pesticides." This phenomenon leading to increased infant mortality rates has been reported as high as 70 in Kazakhstan as of 1993. Toxins can come from all sources including breathing them in from the air, drinking water, and food. However, a young baby does not have much choice about what to eat or drink. It has been found that these contaminants can be passed down through breast feeding and "in a number of areas the physicians recommend against breast feeding babies, as the nursing mothers milk is toxic."


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