Differentiating Characteristics of Asbestos Fibers

Questions Regarding the Risk Level of Asbestos Exposure

Research data has shown that there is a definite correlation between exposure to asbestos particles and asbestos-related diseases, especially for those that are exposed to the fibers in their workplace. Even though data shows a connection between these factors, there is ongoing debate as to just “how much of a risk is present” in environments where asbestos fibers can be found.

Questions have been raised because some of the factors relating to asbestos exposure can vary considerably sometimes making it difficult to define absolute asbestos-related exposure relationships. Some of these variables include asbestos fiber sizes and types, the type of asbestos-related disease, and the duration and level of exposure to the fibers.

Even with the uncertainty, progress has been made in regards to these variables and their effects on human health over the last 25 years. This information may present an issue for regulating authorities and agencies because it may require a deviation from their current opinions on asbestos exposure and its effects on health
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Differing Characteristics of Asbestos Fibers as They Relate to Health Conditions

Asbestos Fibers.

People that have inhaled asbestos fibers have been shown to develop health conditions such as asbestosis, mesothelioma, and lung cancer. There is confusion as to which asbestos types pose a greater risk of asbestos-related disease and to what degree. Additionally, there are questions regarding which exposure conditions present this risk.

One problem in regards to establishing clear-cut asbestos-related factors may be the use of the term “asbestos”, as a catch-all or general term used to represent various asbestos fibers that have different toxic characteristics and tendencies that cause related diseases.

More than 150 studies of asbestos particles has been used to determine the relationship between incidences of asbestos disease and suspected factors; however, this research has had little value in determining level of risk due to limited data on levels of human exposure, fiber types, and other possible contributing factors (i.e. smoking or other lifestyle practices). Other obstacles that contribute to the limitations of this research include the use of many different fiber types or the lack of defining fiber types used in studies.

Sources for the information on this page:


Agency for Toxic Substances and Disease Registry – Tremolite Asbestos Health Consultation


National Cancer Institute – Asbestos Exposure and Cancer Risk


Centers for Disease Control – Work-Related Lung Disease (WoRLD) Surveillance System


American Journal of Pathology – Pulmonary reaction to long and short asbestos fibers is independent of fibroblast growth factor production by alveolar macrophages


American Council on Science and Health