Key Takeaways
- Mesothelioma diagnoses continue today because the disease typically develops 20 to 50 years after asbestos exposure.
- Although asbestos use has declined significantly in the United States, millions of workers were exposed before strict regulations were implemented.
- Older homes, schools, commercial buildings, and industrial facilities still contain asbestos, creating ongoing exposure risks during renovation, demolition, and maintenance.
- Veterans, construction workers, tradespeople, and individuals with secondary (take-home) asbestos exposure remain among the groups at highest risk.
- Advances in medical imaging and pathology have improved mesothelioma diagnosis, allowing more cases to be accurately identified today.
- Continued awareness, early detection, and safe asbestos management remain essential for reducing future mesothelioma cases.
Mesothelioma is a rare and aggressive cancer caused almost exclusively by asbestos exposure. While asbestos use has dramatically declined in the United States and other Western nations, diagnoses of mesothelioma continue to rise. This trend may seem counterintuitive, but there are several reasons why mesothelioma cases are still being reported.
The Long Latency Period of Mesothelioma
One of the biggest reasons mesothelioma diagnoses are still increasing is the disease’s long latency period. After asbestos exposure, it can take 20 to 70 years for mesothelioma symptoms to appear. Even though asbestos use in workplaces and products has decreased significantly since the late 1970s, many individuals who were exposed decades ago are only now beginning to develop symptoms and receive diagnoses.
This long latency period explains why people exposed in the 1960s, 1970s, and even early 1980s are still being diagnosed today. Simply put, the effects of past asbestos exposure are only now surfacing.
Legacy Asbestos in Older Buildings and Infrastructure
Even though new asbestos use is limited, older buildings, schools, factories, and ships still contain legacy asbestos. Over time, asbestos materials naturally degrade or can become disturbed during renovations, demolition, or maintenance work. Once asbestos fibers are airborne, they can be inhaled, putting individuals at risk of developing mesothelioma decades later.
This “hidden” asbestos exposure means that even people who never worked directly with asbestos may still be at risk, contributing to ongoing diagnoses.
Occupational and Environmental Exposure
Many occupations had high levels of asbestos exposure, including construction workers, boiler mechanics, shipyard workers, and steel mill employees. Veterans, especially those who served in the Navy, were also heavily exposed.
Although regulations and safety measures have improved over time, the sheer number of people exposed in these high-risk jobs means that diagnoses are continuing to rise. Mesothelioma is cumulative in risk, so even low levels of exposure early in life can lead to cancer decades later.
Advances in Diagnosis
Medical technology and awareness of mesothelioma have also improved in recent years. Doctors are better able to detect early signs of mesothelioma using imaging scans and biopsies, and pathologists can more accurately identify mesothelioma cell types.
This increased awareness and improved diagnostic capability mean more patients are correctly diagnosed today, contributing to the appearance of rising numbers even as asbestos use declines.
Conclusion
The increase in mesothelioma diagnoses is a result of the disease’s long latency period, continued exposure to legacy asbestos, occupational and environmental risk, and improved diagnostic techniques. While reduced asbestos use will eventually lower future mesothelioma cases, today’s diagnoses are largely the result of exposures that occurred decades ago.
If you or a loved one has been diagnosed with mesothelioma or another asbestos-related disease, it’s important to seek medical care and legal guidance. Our team helps victims of mesothelioma in Pennsylvania navigate treatment options and pursue compensation.
Call us today at (800) 505-6000 or fill out our contact form to learn more.
Frequently Asked Questions
Why are people still being diagnosed with mesothelioma if asbestos use has declined?
Mesothelioma has a very long latency period, often developing 20 to 50 years after asbestos exposure. Many people diagnosed today were exposed decades ago when asbestos was widely used in construction, manufacturing, shipbuilding, and other industries.
Has mesothelioma become more common in recent years?
While age-adjusted mesothelioma rates have generally declined as asbestos use decreased, new diagnoses continue to occur because of historical exposure and the disease’s long latency period. Thousands of Americans are still diagnosed each year.
Can people still be exposed to asbestos today?
Yes. Asbestos remains in many older homes, schools, commercial buildings, and industrial facilities. Renovation, demolition, maintenance work, or disturbing aging asbestos-containing materials can still release harmful fibers if proper precautions are not taken.
Who is most at risk of developing mesothelioma today?
People with past occupational asbestos exposure remain at the highest risk, including construction workers, shipyard employees, electricians, plumbers, military veterans, and industrial workers. Family members exposed through take-home asbestos fibers may also develop mesothelioma decades later.
Does a mesothelioma diagnosis always mean recent asbestos exposure?
No. Most mesothelioma diagnoses are linked to asbestos exposure that occurred many years or even decades earlier. Because symptoms develop slowly, patients are often diagnosed long after their original exposure.
What should I do if I have been diagnosed with mesothelioma?
If you have been diagnosed with mesothelioma, seek care from specialists experienced in treating asbestos-related diseases as soon as possible. You may also wish to explore your legal options if your illness was caused by asbestos exposure. Call (800) 505-6000 or reach out through our contact form to learn about available resources and support.
