How Asbestos Causes Cancer
Posted on: October 13, 2023 *Updated on: May 25, 2024This is an overview of how asbestos causes cancer and the dangers associated with it. Let me provide a more detailed explanation:
- Physical Properties of Asbestos: Asbestos is a naturally occurring mineral that has been used for thousands of years because of its fire-resistant properties. It is composed of thin, needle-like fibers. When products made from asbestos are disturbed, these tiny fibers can be released into the air.
- Inhalation and Ingestion: People are exposed to asbestos primarily by breathing it in, but it can also be ingested. Once inhaled, the fibers can become lodged in the tissues of the lungs or abdomen. Because of their shape and size, asbestos fibers are not easily expelled or broken down by the body.
- Cellular Damage: Over time, the presence of these fibers can cause inflammation and scarring. This chronic inflammation can lead to cellular damage, including damage to the DNA of cells. DNA damage can lead to mutations, and if these mutations occur in specific genes that control cell growth, it can lead to the development of cancer.
- Types of Asbestos-Related Cancers: The most common cancer caused by asbestos exposure is mesothelioma, which is a rare and aggressive cancer that primarily affects the lining of the lungs (pleural mesothelioma) or the abdomen (peritoneal mesothelioma). Asbestos exposure has also been linked to lung cancer, ovarian cancer, and laryngeal cancer.
- Occupational Exposure: Many blue-collar professions such as construction, shipbuilding, mining, and manufacturing have historically exposed workers to asbestos. Additionally, the U.S. military used asbestos in a variety of applications, notably in navy ships, exposing thousands of veterans.
- Talc Contamination: Talc, which is used in various cosmetic and personal care products, can be naturally found near asbestos deposits. This proximity can lead to contamination of talc with asbestos fibers, posing a risk to consumers.
- Prevention and Detection: Since asbestos-related cancers can take decades to develop after exposure, it’s essential for individuals who believe they’ve been exposed to be aware of the symptoms and to undergo regular health screenings.
The use of asbestos has been banned or restricted in many countries due to the health risks it poses. However, buildings and products made before these bans may still contain asbestos. Proper care, including hiring professionals for asbestos removal, is crucial to minimize exposure.