Asbestos Disease: What It Does to the Body and Why the UK Is Still Paying the Price
Asbestos was banned in the UK over two decades ago. Yet it still kills more people here than any other work-related cause. Asbestos disease does not announce itself immediately — it hides for decades, then emerges at a stage when treatment options are limited and prognosis is often grim. Understanding what these diseases are, how they develop, and what can be done to prevent them is knowledge that genuinely saves lives.
How Asbestos Fibres Enter and Damage the Body
Asbestos fibres are microscopic. When materials containing asbestos are disturbed — drilled, cut, sanded, or broken — those fibres become airborne. You cannot see them, smell them, or taste them. You simply breathe them in without knowing.
Once inhaled, the fibres travel deep into the lungs and embed themselves in tissue. The body cannot break them down or expel them efficiently. They remain in place, causing slow, progressive damage over years and decades. In some cases, fibres can also be ingested — for example, through contaminated food or water — which can contribute to certain abdominal conditions, though this route is less common than inhalation.
Occupational Exposure
The vast majority of asbestos disease in the UK originates from occupational exposure. Trades historically at highest risk include plumbers, electricians, carpenters, roofers, laggers, boilermakers, and shipyard workers — anyone who worked regularly with or around asbestos-containing materials (ACMs) before the UK ban in 1999.
The risk has not disappeared. Tradespeople working on older buildings today continue to face exposure if ACMs are not properly identified and managed. Domestic properties built before 2000 may still contain asbestos in artex ceilings, pipe lagging, floor tiles, roofing felt, and partition boards. Disturbing these materials without proper precautions remains dangerous.
Environmental and Secondary Exposure
Not everyone affected by asbestos disease worked directly with it. Environmental and secondary exposure have both caused significant harm.
- Living in older buildings: ACMs in poor or deteriorating condition can release fibres into the indoor environment.
- Living near industrial sites: Communities near former asbestos factories or processing plants faced elevated exposure through contaminated air and soil.
- Secondary exposure: Family members of asbestos workers were exposed to fibres brought home on clothing, skin, and hair. This route has caused mesothelioma in spouses and children who never set foot in a factory.
- Demolition and renovation: Poorly managed refurbishment or unplanned demolition work can release fibres into the surrounding area.
Environmental exposure levels are typically lower than occupational levels, but there is no known safe threshold for asbestos. Even relatively low exposure carries some degree of risk.
The Diseases Caused by Asbestos Exposure
Asbestos causes a distinct cluster of diseases, almost all affecting the respiratory system and surrounding tissues. What makes these conditions particularly devastating is their latency period — symptoms frequently do not appear until 20 to 50 years after initial exposure, by which time the disease is often advanced.
Mesothelioma
Mesothelioma is the asbestos disease most closely associated with asbestos exposure. It is an aggressive cancer of the mesothelium — the thin membrane lining the lungs (pleura), abdomen (peritoneum), heart (pericardium), or, rarely, the testes. Pleural mesothelioma is by far the most common form.
The disease develops when asbestos fibres penetrate lung tissue and reach the pleural lining, triggering cancerous changes over decades. Key facts about mesothelioma in the UK include:
- The UK has one of the highest rates of mesothelioma in the world, a direct consequence of heavy industrial asbestos use throughout the 20th century.
- Around 2,500 people are diagnosed with mesothelioma in the UK each year.
- The latency period is typically 30 to 50 years, meaning many people currently being diagnosed were exposed in the 1970s and 1980s.
- Symptoms include persistent chest pain, breathlessness, fluid around the lungs, fatigue, and unexplained weight loss.
- Prognosis remains poor. Treatment — surgery, chemotherapy, immunotherapy — can extend survival and improve quality of life, but mesothelioma is not currently curable.
There is no level of asbestos exposure at which mesothelioma risk becomes zero. Even brief or low-level exposure has been linked to cases of the disease.
Asbestosis
Asbestosis is a chronic, progressive lung disease caused by the scarring of lung tissue — pulmonary fibrosis — resulting from prolonged asbestos inhalation. It is directly related to dose: the more fibres inhaled over time, the greater the risk and severity.
Scarred tissue becomes stiff and thickened, making it progressively harder to breathe. Symptoms typically emerge 15 to 30 years after exposure and include:
- Persistent shortness of breath, especially on exertion
- A dry, persistent cough
- Chest tightness and pain
- Finger clubbing in advanced cases
- Crackling sounds in the lungs when breathing, detectable by a clinician
There is no cure for asbestosis. Management focuses on slowing progression, relieving symptoms, and preventing complications such as respiratory infections. In severe cases, oxygen therapy or lung transplantation may be considered.
Lung Cancer
Asbestos exposure significantly increases the risk of lung cancer, independent of smoking. When asbestos exposure and smoking are combined, the risk is dramatically compounded — far greater than either factor alone.
Asbestos-related lung cancer typically carries a latency period of 15 to 35 years. Symptoms mirror those of other lung cancers: persistent cough, coughing up blood, chest pain, breathlessness, and unexplained weight loss. Establishing a causal link to asbestos can be important for patients pursuing industrial injury claims or compensation through relevant schemes.
Pleural Plaques and Pleural Thickening
Not all asbestos-related conditions are cancerous. Pleural plaques are areas of thickened, calcified tissue on the pleural lining. They are the most common indicator of past asbestos exposure and are generally benign — they do not cause symptoms or progress to cancer on their own.
Diffuse pleural thickening is more extensive and can restrict lung expansion, causing breathlessness. Both conditions are typically discovered incidentally on chest X-rays or CT scans. Their significance lies in what they signal: confirmed asbestos exposure and an elevated risk of more serious asbestos disease in the future.
Recognising Symptoms and Getting Diagnosed
One of the cruellest aspects of asbestos disease is that symptoms appear long after exposure has ended — often when people have no reason to connect their health problems to something that happened decades earlier. If you have any history of asbestos exposure, whether occupational or environmental, tell your GP. That information is critical for guiding the right investigations.
Symptoms to Watch For
- Persistent breathlessness that worsens over time
- Chronic dry cough not explained by infection
- Chest pain or tightness
- Unexplained weight loss
- Fatigue and reduced exercise tolerance
- Recurrent chest infections
- Fluid around the lungs, detected by a clinician
These symptoms are non-specific and can have many causes. But in the context of an asbestos exposure history, they warrant prompt and thorough investigation.
How Asbestos Disease Is Diagnosed
Diagnosis typically involves a combination of the following:
- Chest X-ray: An initial screening tool that can reveal pleural changes, fibrosis, or abnormal masses.
- High-resolution CT scan: Provides far more detail than an X-ray and is the gold standard for identifying early-stage lung changes associated with asbestos.
- Pulmonary function tests (spirometry): Measures lung capacity and detects restriction or obstruction in airflow.
- Bronchoscopy: Allows direct visualisation of the airways and collection of tissue or fluid samples.
- Biopsy: Tissue samples confirm the presence of malignancy and can detect asbestos fibres under electron microscopy.
- Thoracentesis: Drainage and analysis of pleural fluid, often used in suspected mesothelioma cases.
- PET and MRI scans: Used for staging and treatment planning in confirmed cancer cases.
Early diagnosis matters. While no asbestos-related cancer is straightforward to treat, catching disease at an earlier stage improves the range of treatment options available and can meaningfully extend survival.
The UK’s Asbestos Disease Crisis: Scale and Context
The United Kingdom carries a particularly heavy burden of asbestos disease. This is a direct consequence of the country’s industrial history. Between the 1920s and the 1980s, the UK was one of the world’s largest importers and users of asbestos, deploying it extensively in shipbuilding, power generation, construction, rail, and manufacturing.
Regions that built their economies on heavy industry — Clydeside, Tyneside, South Wales, the West Midlands, and Merseyside — have been disproportionately affected. Former shipyard workers, boilermakers, and construction labourers from these areas continue to be diagnosed with mesothelioma and asbestosis in significant numbers.
Asbestos-related disease causes around 5,000 deaths per year in the UK. This figure is expected to remain high for years to come, given the long latency periods involved. The problem is not confined to former industrial workers. Any tradesperson working on the UK’s existing building stock — which contains millions of tonnes of asbestos — faces ongoing risk if that asbestos is not properly identified and managed.
Prevention: What the Law Requires
The UK has some of the most comprehensive asbestos legislation in the world. The Control of Asbestos Regulations place a duty on anyone responsible for non-domestic premises to manage the risk from asbestos. This “duty to manage” requires dutyholders to:
- Identify whether asbestos is present in their premises
- Assess the condition and risk of any ACMs found
- Produce and implement an asbestos management plan
- Monitor the condition of ACMs and review the plan regularly
- Provide information about ACMs to anyone who may disturb them
The same regulations govern how asbestos work must be carried out. Many types of asbestos removal require a licence from the HSE, and all notifiable work must be reported to the relevant enforcing authority before it begins.
The HSE’s control limit for asbestos fibres in workplace air is 0.1 fibres per cubic centimetre, averaged over four hours. This is a legal maximum — not a safe level. The goal of any properly managed asbestos project is to keep exposure as low as reasonably practicable.
The Role of Asbestos Surveys in Preventing Disease
You cannot manage what you have not identified. An asbestos survey is the essential first step for any building owner, manager, or developer working with older properties. The HSE’s guidance document HSG264 sets out the standards surveys must meet.
There are three main survey types, each suited to different circumstances:
- A management survey is the standard survey for occupied buildings. It identifies ACMs that could be disturbed during normal occupation, routine maintenance, and foreseeable emergencies. It is required for all non-domestic premises where asbestos may be present.
- A refurbishment survey is required before any refurbishment or intrusive maintenance work. It involves a more invasive inspection to locate all ACMs in areas that will be disturbed.
- A demolition survey is required before any demolition work. It is the most thorough inspection type, covering the entire structure to ensure no ACMs are missed before work begins.
Choosing the wrong survey type — or skipping one entirely — is not just a legal risk. It is a direct route to uncontrolled asbestos fibre release and potential asbestos disease for the workers involved.
When Asbestos Needs to Be Removed
Not all asbestos needs to be removed immediately. ACMs in good condition and in locations where they will not be disturbed can often be managed in situ. However, when materials are damaged, deteriorating, or located in areas scheduled for refurbishment or demolition, asbestos removal by a licensed contractor is the appropriate course of action.
Removal must be carried out under strict controlled conditions, with appropriate respiratory protective equipment, enclosures, and air monitoring. Waste must be disposed of as hazardous material. This is not work for untrained individuals or unlicensed contractors.
Protecting Workers and Building Occupants
Preventing asbestos disease is fundamentally about breaking the chain of exposure. That means identifying ACMs before work begins, communicating their location to anyone who might disturb them, and ensuring that any work involving asbestos is carried out by competent, trained people following the correct procedures.
For building managers, the asbestos management plan is the cornerstone of this process. It must be kept up to date, shared with contractors, and reviewed whenever the condition of ACMs changes or new work is planned.
For tradespeople, the message is straightforward: if you are working on a building constructed before 2000, assume asbestos may be present until a survey says otherwise. Do not disturb suspect materials. Ask for the asbestos register before starting work.
Asbestos Surveys Across the UK
Asbestos surveys are needed wherever older buildings exist — and that means across the entire country. Whether you need an asbestos survey in London, an asbestos survey in Manchester, or an asbestos survey in Birmingham, the legal obligations are identical and the health risks are the same. Location does not change the duty to manage.
Frequently Asked Questions
What is the most serious asbestos disease?
Mesothelioma is widely considered the most serious asbestos disease. It is an aggressive cancer of the mesothelium — the lining of the lungs, abdomen, or heart — with a poor prognosis and no current cure. It is almost exclusively caused by asbestos exposure and has a latency period of 30 to 50 years.
How long after asbestos exposure do symptoms appear?
The latency period for asbestos disease varies by condition. Mesothelioma typically takes 30 to 50 years to develop after initial exposure. Asbestosis and lung cancer generally have latency periods of 15 to 35 years. This long gap between exposure and symptoms is one of the reasons asbestos disease is so difficult to detect early.
Can asbestos disease be cured?
Currently, there is no cure for mesothelioma or asbestosis. Treatments are available that can slow progression, manage symptoms, and in some cases extend survival — particularly for mesothelioma, where surgery, chemotherapy, and immunotherapy are used. Early diagnosis improves the range of treatment options available.
Is there a safe level of asbestos exposure?
No safe threshold for asbestos exposure has been established. While risk increases with the level and duration of exposure, even relatively brief or low-level exposure has been linked to mesothelioma. The HSE’s control limit for asbestos fibres in workplace air is a legal maximum, not a safe level. The goal is always to minimise exposure as far as possible.
What should I do if I think I have been exposed to asbestos?
Tell your GP about your exposure history as soon as possible, including when and how it occurred. Your GP can arrange appropriate monitoring and investigations. If you are a building owner or manager concerned about asbestos in your property, commission a professional asbestos survey to identify any ACMs and assess the risk they pose.
Protect Your Building, Protect Your People
Asbestos disease is preventable. The science is settled, the legislation is clear, and the tools to manage the risk exist. What is required is the commitment to identify asbestos, manage it properly, and ensure no one is exposed unnecessarily.
Supernova Asbestos Surveys has completed over 50,000 surveys across the UK, helping building owners, managers, and developers meet their legal obligations and protect the people who live and work in their properties. Whether you need a management survey, a refurbishment survey, a demolition survey, or specialist asbestos removal, our accredited surveyors are ready to help.
Call us on 020 4586 0680 or visit asbestos-surveys.org.uk to arrange your survey today.