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Asbestos and cancer risk

This page was reviewed under our medical and editorial policy by
Maurie Markman, MD, President, Medicine & Science at CTCA.

This page was updated on February 28, 2022.

Asbestos is a combination of natural minerals that come together in the form of fibers. It occurs naturally in rocks and soil in some places, but it was also added to materials during manufacturing due to its strength and heat-resistance.

In the past century, though, asbestos has been linked to health problems—including cancer risk—and its use in manufacturing has been limited or banned in many countries, including the United States.

Where is asbestos found?

Even though it’s less likely to be used in factories now, asbestos is sometimes still found in the following, among others:

  • Building insulation
  • Car parts
  • Cement
  • Tiles
  • Roofing
  • Pipes
  • Textiles

Another place asbestos is found is in disaster areas where buildings have been damaged. One example is the World Trade Center debris after the Sept. 11, 2001, attack.

At any given time, asbestos may be in the air or water at very low levels that don’t typically cause health problems.

How is asbestos released?

If left alone, materials containing asbestos aren’t damaging. But if disturbed, such as during construction—whether tearing down buildings or overturning soil and rock with naturally occurring asbestos inside—asbestos fibers may be inhaled or swallowed, leading to health problems, especially in the lungs.

Asbestos may also be released when older materials corrode or break down.

Asbestos exposure and your health

Asbestos doesn’t create problems immediately upon exposure. It may take years of exposure before asbestos begins to have a noticeable effect on health.

But certain groups of people may have higher levels of long-term exposure to asbestos than others, such as those who currently work—or have worked—in:

  • Demolition
  • Construction
  • Ship repair
  • Manufacturing of textiles Insulation
  • Building materials

Family members may be exposed to asbestos too, as workers bring fibers home on their clothing or other belongings.

How can you lower your risk of asbestos-related health problems?

Now that you know more about the connection between asbestos exposure and your health, you can take steps to reduce your risk of asbestos-related issues. Keep in mind that risk for asbestos-related problems is most associated with high levels of exposure or long-term exposure over many years. You may:

  • Talk about asbestos exposure: Be sure your doctor knows about any possible asbestos exposure you’ve had, even if it was decades ago. This is especially important if you smoke. Your doctor can monitor your health through chest X-rays, lung function tests or computed tomography (CT) scans that could show health problems or some types of cancer.
  • Watch for symptoms: It’s easy to attribute a new cough to the cold that’s been going around, but symptoms such as a new cough, a worsening cough, chest pain, swallowing problems or unexplained weight loss may be related to asbestos exposure. If you have any signs of a respiratory illness, see your doctor promptly.
  • Stay up to date on vaccines: Work with your care team to make sure you’ve had all the recommended vaccines, including for the flu, pneumonia and COVID-19.

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