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Page Updated: June 22, 2022

Asbestos Ingestion, Peritoneal Mesothelioma, and Digestive Cancers

Anne Courtney Page Medically Reviewed and Edited by Anne Courtney, AOCNP, DNP

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Fact Checked

This page has been fact-checked by a Doctor of nursing practice specializing in Oncology and has experience working with mesothelioma patients.

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Sources of information are listed at the bottom of the article. We make every attempt to keep our information accurate and up-to-date. 

Please Contact Us with any questions or comments.

Asbestos ingestion, peritoneal mesothelioma, and digestive cancers are related, but experts do not fully understand the connection. Ingestion is less common than inhalation of asbestos fibers, which causes pleural mesothelioma, but it can happen. Ingestion may directly cause peritoneal mesothelioma and digestive cancers.

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Peritoneal Mesothelioma

Pleural mesothelioma is the most common type of mesothelioma.[1] Fewer people are diagnosed with peritoneal mesothelioma.

This is a form of cancer that begins in the tissue lining of the abdominal cavity. While it is not completely understood how asbestos fibers find their way to the peritoneum, it may be due to accidental ingestion of asbestos fibers.

Stomach Icon


Peritoneal mesothelioma begins with tumor development in the peritoneum, the thin layer of tissue that surrounds organs in the abdominal cavity.

From there, cancer may spread to the omentum, a layer of fat covering the abdomen. It may also affect the liver and intestines. Symptoms of peritoneal mesothelioma include:[1]

  • Bowel obstruction
  • Constipation
  • Diarrhea
  • Abdominal pain
  • A feeling of fullness
  • Fatigue
  • Vomiting and nausea

As with pleural mesothelioma, this type is difficult to treat and is often diagnosed in advanced stages. Surgery, chemotherapy, and radiation may be used to shrink tumors.

A newer type of chemotherapy involving drugs injected directly right into the abdomen shows promise for treatment. Like other types of mesothelioma, the peritoneal form is most often associated with asbestos exposure.

Researchers are currently investigating how asbestos fibers arrive in the abdominal cavity, though ingestion is the most likely culprit.

How Asbestos May Be Ingested

The inhalation of asbestos fibers causes pleural mesothelioma. After inhaling these tiny fibers, they become lodged in the tissues of the pleura or lungs, causing damage that leads to cancer.

Inhalation occurs easily when someone is around asbestos, as fibers are lightweight and easily become airborne.[2] Ingestion is less likely, though possible. This may be how asbestos fibers get to the peritoneum.[3]

Many people diagnosed with mesothelioma worked in environments with asbestos. Individuals employed in construction, shipbuilding, and ship maintenance, areas where asbestos was heavily used for decades, were most at risk.

Airborne asbestos fibers on worksites could settle as dust, landing on food, water, or hands, ultimately leading to ingestion. Even getting fibers in the mouth from a dusty area could lead to swallowing them. Workers could also swallow fibers by coughing up inhaled asbestos and swallowing contaminated mucous.[3]

While ingesting fibers on a contaminated worksite is the most likely way asbestos could lodge in the abdominal cavity, there are other possibilities.

For example, water can become contaminated by asbestos.[4] Water flowing through asbestos-containing cement pipes could become contaminated, as could water near a mine. Contamination from asbestos or other mines could potentially lead to ingestion.

Asbestos in Restaurants and Grocery Stores

Food prepared or sold in restaurants, cafeterias, and grocery stores could potentially become contaminated with asbestos fibers. While this is less likely, there have been incidents of contamination in these locations.

In 2011, authorities temporarily closed a grocery store in Springfield, Illinois, after workers removed flooring, releasing asbestos fibers into the air. This led to possible food contamination in the store, leading the business to temporarily close for cleaning and abatement.[5]

While this problem was caught before it became hazardous, the contamination could be discovered too late in other situations.

Stores and restaurants serving food could contaminate products with asbestos fibers, causing customers to ingest asbestos fibers unknowingly; therefore, people need to understand how to handle asbestos-containing materials safely.

Asbestos in the Lymphatic System

Ingestion is not the only way asbestos fibers could infect the abdomen, causing peritoneal mesothelioma. Inhaled fibers in the chest cavity may migrate from the interstitial fluid into the lymph nodes. The lymphatic system pulls this fluid into the lymph nodes.

If the fluid contains asbestos fibers, those fibers can be transported to other areas of the body. From the lymph nodes, fibers can enter the bloodstream, and from there, they can move anywhere in the body, including the abdominal cavity.[6]

Asbestos and Digestive Cancers

Peritoneal mesothelioma is not the only potential diagnosis that can come from asbestos fibers in the abdominal cavity. Studies have linked asbestos to digestive cancers.

One study investigated over 700 lighthouse keepers in Norway. These keepers served between 1917 and 1967. Some of those workers consumed asbestos-contaminated water and had a significantly increased risk of developing digestive cancers.

The greatest cancer risk was for cancer of the stomach.[4] More research is needed to define clear associations to other cancers.

Identifying and Avoiding Ingestion of Asbestos Fibers

For the average person, asbestos exposure through ingestion is unlikely. Those at greater risk work with or around asbestos, including construction workers, shipyard workers, automotive and airplane mechanics, miners, and industrial workers.

While workplace safety regulations currently make exposure to asbestos less likely, the risk remains. To avoid asbestos ingestion, workers should keep all food and drink out of the area. They should also use proper safety equipment, including masks and respirators, to avoid exposure to asbestos fibers.

If food or drinks are in an asbestos-containing area, identifying fibers by sight is impossible. Identifying asbestos fibers requires specialized microscopy. However, a good rule of thumb is to dispose of food or drink in an area that could contain exposed asbestos or if there is dust that could contain asbestos.

Ingesting asbestos is not as common as inhalation. Both types of contamination are now less likely than in years past; however, as long as asbestos is still in use or found in older buildings and ships, the risk of ingestion remains. It is important to be aware of the risks and to take steps to avoid inhalation or ingestion. These precautions could help prevent the development of mesothelioma or digestive cancers.

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Page Medically Reviewed and Edited by Anne Courtney, AOCNP, DNP

Anne Courtney

Anne Courtney has a Doctor of Nursing Practice degree and is an Advanced Oncology Certified Nurse Practitioner. She has years of oncology experience working with patients with malignant mesothelioma, as well as other types of cancer. Dr. Courtney currently works at University of Texas LIVESTRONG Cancer Institutes.

Connect with Doctor of Nursing Practice Anne Courtney
References
  1. Mayo Clinic. (2020, October 20). Mesothelioma – Symptoms and Causes.
    Retrieved from: https://www.mayoclinic.org/diseases-conditions/mesothelioma/symptoms-causes/syc-20375022
  2. National Cancer Institute. (2017, June 7). Asbestos Exposure and Cancer Risk.
    Retrieved from: https://www.cancer.gov/about-cancer/causes-prevention/risk/substances/asbestos/asbestos-fact-sheet
  3. Agency for Toxic Substances and Disease Registry. (2014, January 29). Asbestos Toxicity. How Are People Exposed to Asbestos?
    Retrieved from: https://www.atsdr.cdc.gov/csem/asbestos/how_are_people_exposed_to_asbestos.html
  4. Kjaerheim, K., Ulvestad, B., Martinsen, J.I., and Andersen, A. (2005, June). Cancer of the Gastrointestinal Tract and Exposure to Asbestos in Drinking Water Among Lighthouse Keepers (Norway). Cancer Causes Control. 16(5), 593-8.
    Retrieved from: https://www.ncbi.nlm.nih.gov/pubmed/15986115
  5. Illinois Department of Public Health. (2011, July 29). Asbestos Release at Local Grocery Store.
    Retrieved from: http://www.idph.state.il.us/public/press11/7.29.11_Asbestos_Release.htm
  6. Miserocchi, G., Sancini, G., Mangegazza, F., and Chiappino, G. (2008). Translocation Pathways for Inhaled Asbestos Fibers. Environ. Health. 7, 4.
    Retrieved from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2265277/
View All References

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