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Asbestos is a dangerous mineral that can cause various cancers. When someone inhales or ingests it, the fibers can embed in tissues and organ linings. Over time, this can cause cancer. Asbestos-related cancers include mesothelioma, lung cancer, ovarian cancer and laryngeal cancer.


01. How Asbestos Causes Cancer

How Does Asbestos Cause Cancer?

Asbestos is a mineral that was commonly used in thousands of products for decades. It was a staple of construction materials and can still be found in many older buildings today. If asbestos is released into the air, people can inhale or swallow the microscopic fibers.

Once the fibers enter the body, they can stay there for many years. Over time, the fibers can cause irritation, inflammation and scarring. This can lead to asbestos diseases and cancers like mesothelioma.

Asbestos can cause illnesses and cancers. It is known to cause mesothelioma. In addition, it can cause lung, ovarian and laryngeal cancers. Asbestos exposure can also trigger other conditions, like asbestosis (lung scarring) and pleural plaques.

It can take many years for asbestos-related cancers to develop and symptoms to emerge. This time span is called a latency period. Often, mesothelioma and asbestos lung cancer patients aren’t diagnosed until 10 – 50 years after their first exposure.

All six types of asbestos can cause cancer. Any amount of exposure, including short-term asbestos exposure, can lead to an asbestos-related illness.

02. Asbestos Cancer Types

What Types of Cancer Are Caused by Asbestos?

Asbestos exposure can cause many types of cancer. The National Cancer Institute (NCI) has definitively linked asbestos exposure to mesothelioma, lung cancer, ovarian cancer and laryngeal cancer.

Mesothelioma

  • Mesothelioma is caused by asbestos.
  • Asbestos fibers can become lodged in organ linings, triggering cancerous changes.
  • Mesothelioma cancer most often occurs in the tissues surrounding the lungs or the abdomen.

Lung Cancer

Ovarian Cancer

  • Researchers continue to study the connection between asbestos and ovarian cancer.
  • Evidence suggests trace asbestos in contaminated talcum powder can cause ovarian cancer.

Laryngeal Cancer

  • Researchers continue to study how asbestos causes laryngeal cancer.
  • Smoking, heavy alcohol use and exposure to other toxins can increase the risk of laryngeal cancer.

The International Agency for Research on Cancer (IARC) has also linked the above cancers to asbestos exposure. The IARC is part of the World Health Organization (WHO) and is a leader in cancer research.

Some studies suggest a possible link between asbestos and other types of cancers. These include breast cancer, stomach cancer and colon cancer.

Mesothelioma

Mesothelioma is a rare cancer that develops in the lining around certain organs. It is caused by exposure to asbestos fibers. Inhaling or ingesting asbestos can cause the fibers to embed in organ linings. After that, the fibers can cause inflammation, irritation and damage, leading to cancer.

The location of the affected tissues determines the type of mesothelioma. The most common type is pleural mesothelioma, which develops in the lining around the lungs (pleura). Mesothelioma may also develop in the linings around the abdomen (peritoneum), heart (pericardium) or testis (tunica vaginalis).

Asbestos and Mesothelioma Quick Facts

  • Any amount of asbestos exposure can cause mesothelioma.
  • The term “asbestos cancer” most commonly refers to mesothelioma.
  • There are about 3,000 new cases of mesothelioma annually.
  • The average mesothelioma life expectancy with treatment is 18 – 31 months after diagnosis.
  • The 5-year survival rate for pleural mesothelioma patients is about 12%.

Asbestos Lung Cancer

Asbestos exposure can also lead to lung cancer. Asbestos lung cancer develops after fibers are inhaled and become lodged in the lung tissue. The fibers can then cause irritation, triggering the formation of malignant cells. It is different from mesothelioma.

The development of asbestos-related lung cancer can take more than a decade. As a result, symptoms may not appear for many years after initial exposure.

Research has found long-term asbestos exposure increases the likelihood of developing asbestos-related lung cancer. However, there are several other risk factors, such as smoking.

Asbestos and Lung Cancer Quick Facts

  • Asbestos lung cancer typically presents more than a decade after exposure.
  • Greater levels of exposure generally lead to a higher risk of lung cancer.
  • Some research indicates that asbestos causes around 4% of lung cancer cases. Other studies have estimated the figure to be as high as 18%.
  • An estimated 234,580 new cases of lung cancer could occur in 2024.*
  • The 5-year survival rate for lung cancer patients is about 27%.*

*Source: SEER Cancer Stat Facts

Asbestos-Related Ovarian Cancer

Asbestos exposure can lead to ovarian cancer. Asbestos-related ovarian cancer is caused when asbestos fibers travel through the body to the ovaries. There are two main ways asbestos may reach the ovaries:

  • People apply asbestos-contaminated products (such as talcum powder) to the genitals. Fibers then travel through the reproductive system.
  • People inhale or swallow asbestos. Fibers then travel through the bloodstream or the lymphatic system, eventually reaching the ovaries.

The IARC recognized asbestos as a proven cause of ovarian cancer in 2009. More recent studies continue to support this finding.

Asbestos and Ovarian Cancer Quick Facts

  • Ovarian cancer has been linked to regular talcum powder use. Talcum powder can be particularly dangerous if contaminated with asbestos.
  • Cases of ovarian cancer have been linked to secondary exposure for women who live with people who held high-risk asbestos occupations.
  • Increasing age and hormonal treatments may heighten the risk of ovarian cancer.
  • An estimated 19,680 new ovarian cancer cases could occur in 2024.*
  • The 5-year survival rate for ovarian cancer patients is about 51%.*

*Source: SEER Cancer Stat Facts

Asbestos-Related Laryngeal Cancer

Asbestos exposure can lead to laryngeal cancer (cancer of the voice box). Asbestos-related laryngeal cancer is caused by inhaling asbestos. Fibers must travel through the larynx before reaching the lungs. As a result, fibers can embed in the tissues of the voice box. This can lead to the development of malignant cells.

The National Institutes of Health (NIH) has confirmed the relationship between laryngeal cancer and asbestos. Many medical studies also support asbestos as a cause.

Asbestos and Laryngeal Cancer Quick Facts

  • Studies have found a link between asbestos exposure and laryngeal cancer rates.
  • Smoking and excessive alcohol use may increase the risk of asbestos-related laryngeal cancer.
  • Exposure to other carcinogens may lead to an increased risk of asbestos-related laryngeal cancer.
  • An estimated 12,650 new cases of laryngeal cancer could occur in 2024.*
  • The 5-year survival for laryngeal cancer patients is about 62%.*

*Source: SEER Cancer Stat Facts

Other Asbestos-Related Diseases

Asbestos exposure may cause other cancers and illnesses as well. Cancers that may be linked to asbestos exposure include:

  • Breast cancer
  • Colon cancer
  • Esophageal cancer
  • Kidney cancer
  • Leukemia
  • Pharyngeal cancer
  • Prostate cancer
  • Rectal cancer
  • Stomach cancer

Some people may be diagnosed with a benign (non-cancerous) asbestos disease. However, a benign condition could also be associated with a malignant condition. For example, pleural effusion is a symptom of pleural mesothelioma.

03. Risk Factors

Asbestos Cancer Risk Factors

Studies have found several factors that may increase the risk of developing asbestos cancer, including:

  • Alcohol use
  • Existing medical conditions
  • Gender
  • Genetics
  • Increasing age
  • Increasing duration or intensity of asbestos exposure
  • Low physical activity
  • Obesity
  • Poor diet
  • Radiation exposure
  • Smoking

How Does Asbestos Exposure Happen?

Asbestos exposure can happen in many ways. One of the most common ways to come into contact with asbestos is through asbestos-containing products. This may happen on the job, like construction workers using asbestos construction products. It could also happen at home while renovating a house or using asbestos consumer products. Although no level of exposure is safe, long-term exposure increases the risk of asbestos cancer.

Individuals who know they have been exposed to asbestos should inform their doctor as soon as possible. Proactive monitoring may help increase the likelihood of early detection. Asbestos cancer patients diagnosed in early stages often have better prognoses than those diagnosed at later stages.

Preventive Measures for Asbestos Exposure

People can take a few steps to lower their risk of asbestos exposure.

For people who work around asbestos, it is important to follow state and federal asbestos handling regulations. Compliance can include wearing proper protective gear, wetting down products to prevent airborne fibers and following disposal guidelines.

People who don’t work in at-risk occupations should also follow safety guidelines. For example, homeowners can hire asbestos contractors to abate any asbestos lawfully. People who use personal care products can opt for non-talc products to also avoid potential asbestos.

04. Symptoms

Common Asbestos Cancer Symptoms

Specific symptoms may vary between types of asbestos cancers. Some common symptoms across asbestos cancers include:

  • Abdominal pain
  • Bloating
  • Chest pain
  • Coughing
  • Difficulty breathing
  • Difficulty or pain when swallowing
  • Ear pain
  • Fatigue
  • New lumps
  • Reproductive or sexual changes
  • Sore throat
  • Urinary urgency
  • Weight loss

Experiencing one or more of these symptoms does not mean you have an asbestos cancer. But awareness of the possible signs may help you catch them earlier. If you have a history of asbestos exposure, contact your doctor if any new symptoms arise or existing issues get worse.

How Is Asbestos Cancer Diagnosed?

The cancer diagnostic process typically involves several testing methods. Doctors may begin by examining a patient’s medical history and analyzing symptoms.

After reviewing symptoms, doctors often perform a physical evaluation and other tests. Tests commonly used while diagnosing asbestos cancers include:

  • Biopsies: Needle and surgical biopsy samples can help determine if affected tissues are benign or malignant. Tissue samples can also assist in identifying any cancers found.
  • Blood tests: These tests are used to rule out minor conditions and identify potential biomarkers. Biomarkers are substances that may help doctors detect the presence of mesothelioma cells.
  • Imaging scans: Tests like X-rays and CT scans can help locate abnormalities in tissues and organs.

Individuals with asbestos cancer symptoms should seek medical care as soon as they can, especially those with a known history of exposure. They should also disclose any known history of asbestos exposure to their care teams.

05. Treating Asbestos Cancer

Asbestos Cancer Treatment

Treatment plans will vary on a case-by-case basis. Doctors consider multiple factors when creating a treatment plan. This may include cancer type, stage, overall health, age and other patient characteristics.

Treatments for asbestos-related cancers include:

In general, chemotherapy and combination plans are the most common. But specific treatment plans vary between cancer types.

Patients should seek care from specialists. This may help ensure they receive an accurate diagnosis and comprehensive treatment. For example, mesothelioma specialists have a deep understanding of which treatment options work best for different types of mesothelioma.

Managing Emotions and Finances During Cancer Treatment

Some patients may find treatment overwhelming. But treatment is the best way for patients to improve their prognosis, extend their life expectancy and boost their quality of life. For example, mesothelioma patients who undergo any type of treatment generally live about six months longer than those who do not.

There are resources to help manage the emotional, physical and financial burden of an asbestos cancer diagnosis.

06. Common Questions

Common Questions About Asbestos Cancer

Will I get cancer if I breathe in asbestos?

Not every person who breathes in asbestos develops cancer. But inhaling or swallowing fibers can increase the risk of developing asbestos-related cancer. No level of asbestos exposure is safe. People who have been exposed should let their doctors know and monitor for any symptoms.

Can you prevent asbestos cancer?

There is no way to fully prevent asbestos cancer. But you may be able to reduce your risk by avoiding asbestos. Anyone with a history of asbestos exposure should inform their doctor. Together, you can monitor for signs of asbestos cancer. Maintaining a healthy lifestyle may provide additional protection against cancer.