Canada Banned Asbestos, Cases Still Rise
Despite banning asbestos, Canada sees 472 mesothelioma deaths annually. Legacy asbestos in buildings and the disease's long latency explain the trend.
Key Statistics
| Metric | Value |
|---|---|
| Annual mesothelioma deaths (2022) | 472 |
| Year of asbestos ban | 2018 |
| Latency period | 20-60 years |
| Highest risk areas | Québec, Vancouver |
| Ongoing exposure source | Legacy asbestos in buildings |
In 2018, Canada banned asbestos after decades as one of the world’s largest producers. Yet mesothelioma cases continue to rise, with 472 Canadians dying from the disease in 2022 alone. Understanding why reveals important lessons about asbestos’s long-lasting harm.
The Ban Came Too Late to Stop Rising Cases
Why Cases Keep Increasing
| Factor | Explanation |
|---|---|
| Latency period | 20-60 years between exposure and diagnosis |
| Legacy asbestos | Millions of buildings still contain asbestos |
| Historical mining | Decades of production left lasting contamination |
| Environmental exposure | Asbestos escaping into air from aging buildings |
Someone exposed to asbestos in the 1990s may not develop mesothelioma until the 2040s. The ban stops new occupational exposure, but past exposures continue to cause disease.
When Will Cases Decline?
Experts predict mesothelioma rates won’t significantly decline for decades:
| Period | Expected Trend |
|---|---|
| 2025-2035 | Continued increase |
| 2035-2050 | Plateau or slight decrease |
| 2050+ | Gradual decline (if no new exposures) |
Who’s Getting Sick Now
The Changing Face of Mesothelioma
| Demographic | Trend | Explanation |
|---|---|---|
| Men | Declining slightly | Less occupational exposure |
| Women | Rising | More environmental exposure |
| Ages 50-60 | Declining | Past peak occupational exposure |
| Ages 70+ | Rising | Longer latency cases emerging |
The shift from male-dominated occupational cases to more female and elderly cases reflects a transition from workplace to environmental exposure.
High-Risk Regions
| Region | Risk Factor |
|---|---|
| Québec | Historical asbestos mining |
| Vancouver | Shipyard exposure history |
| Mining communities | Direct mine exposure |
| Industrial areas | Manufacturing exposure |
Québec, once home to the world’s largest asbestos mines, has among Canada’s highest mesothelioma rates.
The Legacy Asbestos Problem
Asbestos Remains in Buildings
Despite the ban, asbestos remains in:
- Insulation in walls and attics
- Floor tiles and adhesives
- Roofing materials
- Pipe insulation
- Textured ceilings (popcorn ceilings)
- HVAC systems
These materials pose minimal risk when undisturbed but become dangerous during:
| Activity | Risk Level |
|---|---|
| Normal occupancy | Low |
| Renovation | High |
| Demolition | High |
| Maintenance/repairs | Moderate |
| Natural deterioration | Low but ongoing |
Construction Workers Still at Risk
Construction workers face continued exposure during:
- Building maintenance
- Renovation projects
- Demolition work
- Emergency repairs
Proper asbestos identification, handling, and removal protocols are critical for worker protection.
Environmental Contamination
Lake Bécancour: A Case Study
A 2022 study found Lake Bécancour in Québec contains sediment with up to 4.4% asbestos by weight. For over 100 years, mines dumped hundreds of millions of tons of asbestos tailings into the Bécancour River basin.
This environmental contamination creates ongoing exposure risk for nearby communities, even without direct occupational contact.
Asbestos “Escaping” from Buildings
Experts note a concerning trend:
“The really high asbestos exposure that people once got in workplaces is less common today. Lower exposures from asbestos in buildings where people are living and working, which is gradually escaping into the environment, will become more important over time.”
This gradual release from deteriorating building materials represents a new exposure pathway.
Canada’s Ban: What It Covers
Prohibited
- Import of raw asbestos
- Import of products containing asbestos
- Manufacturing of asbestos products
- Sale of new asbestos products
Exemptions (Still Allowed)
| Sector | Exemption Until |
|---|---|
| Military | 2029 |
| Nuclear energy | 2029 |
| Chlor-alkali industry | 2030 |
These exemptions mean some asbestos use continues in Canada.
What Canadians Should Know
If You Work in Construction or Renovation
- Assume older buildings contain asbestos until tested
- Follow proper protocols for identification and handling
- Use appropriate PPE when asbestos is suspected
- Report unsafe conditions to workplace safety authorities
- Document exposures for potential future health monitoring
If You Live or Work in an Older Building
| Building Age | Asbestos Likelihood |
|---|---|
| Pre-1980 | High |
| 1980-1990 | Moderate |
| Post-1990 | Low but possible |
Materials in good condition generally pose minimal risk. Concerns arise when materials are damaged, deteriorating, or disturbed.
If You Were Exposed to Asbestos
Document your exposure history, including dates, locations, and duration, and tell your doctor about any potential asbestos exposure so it becomes part of your record. Watch for symptoms such as shortness of breath, chest pain, and persistent cough. Not everyone who is exposed develops disease, but awareness makes earlier diagnosis more likely.
Resources for Canadians
Several organizations can help Canadians affected by asbestos. The Canadian Mesothelioma Foundation provides patient support and information. Provincial workers’ compensation boards run province-specific programs for exposed workers. WorkSafe and other workplace safety agencies handle exposure reporting and protection. Healthcare providers are the starting point for screening and diagnosis.
Lessons for Other Countries
Canada’s experience illustrates four points. Bans do not immediately stop cases, because latency means decades of additional disease. Legacy asbestos is a long-term problem, with buildings still containing millions of tons of the material. Environmental exposure matters alongside occupational exposure. And monitoring must continue to track cases and exposures well after a ban takes effect.
Countries considering or implementing bans should plan for decades of continued mesothelioma cases and invest in legacy asbestos management.
Document your exposure history including dates, locations, and duration. Inform your doctor about potential asbestos exposure. Watch for symptoms including shortness of breath, chest pain, and persistent cough. Not everyone exposed develops disease, but awareness is essential.
Reader Q&A
Frequently Asked Questions
Why are mesothelioma cases still rising after Canada's asbestos ban?
Mesothelioma has a 20-60 year latency period between exposure and diagnosis. Someone exposed in the 1990s may not develop disease until the 2040s. The ban prevents new occupational exposure but cannot stop diseases caused by past exposures. Experts predict rates won’t significantly decline for decades.
Where are Canadians still being exposed to asbestos?
Legacy asbestos remains in millions of buildings. In insulation, floor tiles, pipe insulation, and textured ceilings. Construction workers face continued exposure during renovation, demolition, and maintenance work. Environmental contamination from historical mining also persists in areas like Québec.
Why are more women and elderly developing mesothelioma?
The pattern is shifting from male-dominated occupational cases to more environmental exposure. Men traditionally had higher rates from workplace exposure, but that’s declining. Environmental exposure from asbestos “escaping” from deteriorating building materials affects both sexes. The elderly population represents cases with longer latency periods now emerging.
Does Canada's ban completely prohibit asbestos?
Not entirely. The ban prohibits import and manufacture of asbestos products, but exemptions exist for military (until 2029), nuclear energy (until 2029), and the chlor-alkali industry (until 2030). The ban also doesn’t require removal of asbestos already installed in buildings.
Is asbestos a problem in Canada?
Asbestos remains a public health concern in Canada despite the 2018 ban. In 2019, 460 Canadians received a mesothelioma diagnosis, and in 2022, 472 people with mesothelioma died from the disease. Approximately 235,000 Canadians face occupational asbestos exposure, primarily in construction. Many older buildings constructed before 1990 still contain asbestos-containing materials that pose risks if disturbed or deteriorating. Additionally, some industries retain legal exemptions to use asbestos until 2029 or 2030, and environmental contamination persists in areas like Québec, where Lake Becancour sediment contains up to 4.4% asbestos by weight.
Which country is currently the largest producer of asbestos?
Russia is the largest producer of asbestos worldwide, accounting for roughly 50% of global supply in recent years. In 2023, Russia produced 630,000 metric tons, far exceeding Kazakhstan’s 260,000 metric tons and China’s approximately 200,000 metric tons. Production trends show Russia maintaining this lead through 2025, with ongoing mining in countries like Brazil and Kazakhstan following behind. Asbestos exposure from such production contributes to mesothelioma risk in people with occupational or environmental contact.
What famous person died from mesothelioma?
Steve McQueen, a prominent actor known for films like The Great Escape and The Magnificent Seven, died from pleural mesothelioma in 1980 at age 50. His exposure is linked to U.S. Marine service, shipyard work, and possible movie set insulation. Other celebrities who died from mesothelioma include musician Warren Zevon (2003), actor Ed Lauter (2013), and NFL player Merlin Olsen. Paleontologist Stephen Jay Gould survived peritoneal mesothelioma for 20 years before dying from unrelated lung cancer in 2002.
When was asbestos no longer used in Canada?
Canada implemented a full ban on asbestos manufacture, import, sale, and export in December 2018. However, asbestos use declined significantly earlier, with restrictions beginning in 1976 on insulation and fireproofing, and most manufacturing phased out by 1990. Homes and buildings constructed before 1990 may still contain asbestos-containing materials. Some industrial exemptions exist, including the Chlor-Alkali industry, which was permitted to use asbestos in diaphragms until 2030 under the 2018 regulations.