What Are the Health Effects of Asbestos Exposure?

Overview of Asbestos-Related Diseases

Asbestos exposure causes a spectrum of diseases that range from benign (but debilitating) conditions to aggressive, fatal cancers. The World Health Organization (WHO) estimates that asbestos exposure is responsible for over 100,000 deaths worldwide each year. All forms of asbestos — chrysotile, amosite, crocidolite, tremolite, actinolite, and anthophyllite — are classified as Group 1 human carcinogens, meaning there is sufficient evidence to establish that they cause cancer in humans.

The health effects of asbestos exposure are characterized by long latency periods. Symptoms typically do not appear until 10 to 50 years after initial exposure, which is why many people who were exposed decades ago are only now being diagnosed with asbestos-related diseases.

Cancerous Diseases

Mesothelioma is the cancer most uniquely associated with asbestos exposure. It develops in the mesothelium — the thin tissue lining the chest cavity, abdominal cavity, or heart. Pleural mesothelioma (chest cavity lining) accounts for approximately 80% of cases. Mesothelioma is aggressive and has a poor prognosis, with a median survival of 12 to 21 months after diagnosis. Treatment options include surgery, chemotherapy, radiation, and immunotherapy.

Asbestos-related lung cancer develops within the lung tissue itself and is clinically similar to lung cancer caused by other factors, including smoking. However, the combination of asbestos exposure and smoking multiplies lung cancer risk dramatically. Asbestos is also linked to laryngeal cancer and ovarian cancer, both of which have been classified as caused by asbestos exposure by the IARC.

Non-Cancerous Conditions

Asbestosis is a chronic fibrotic lung disease caused by asbestos fibers scarring the lung tissue. It develops gradually and causes progressive shortness of breath, reduced lung capacity, and chronic cough. Asbestosis has no cure and can be severely debilitating. In advanced cases, it can be fatal.

Pleural disease encompasses several non-cancerous conditions affecting the pleural lining around the lungs. Pleural plaques — areas of thickened, often calcified tissue on the pleural surface — are the most common sign of asbestos exposure. Pleural thickening and pleural effusions (fluid buildup between the lung and chest wall) can restrict breathing and cause chest pain. While not cancerous, these conditions indicate significant asbestos exposure and may warrant monitoring for more serious disease.

Seeking Medical and Legal Help

Anyone with a history of asbestos exposure should inform their physician and request appropriate medical monitoring. Early detection of asbestos-related disease improves treatment outcomes and provides more options. Individuals diagnosed with any asbestos-related condition may have legal rights to compensation from the companies responsible for their exposure. An experienced mesothelioma attorney can evaluate your case at no cost.