Why did I get IPF? What caused this? These are among the first questions every newly diagnosed patient asks me. The honest answer is that we often cannot identify a single definitive cause — which is precisely why the condition is called idiopathic, meaning of unknown origin. But as a specialist in IPF treatment in Liverpool, let me explain what we do understand about the risk factors and mechanisms involved.
What ‘Idiopathic’ Really Means
Idiopathic does not mean we have no understanding of the condition — it means no single, definitive external cause has been identified in a particular patient’s case. Research has revealed several factors that significantly increase the risk of developing IPF, even if none of them alone explains every case. Understanding these factors helps guide treatment decisions and allows family members to be aware of their own potential risk.
Age: The Most Consistent Risk Factor
IPF almost exclusively affects people over the age of 50, with the majority of diagnoses occurring between 60 and 70 years of age. The reasons are likely a combination of accumulated environmental exposures over decades and age-related changes in the way lung tissue repairs itself. Younger patients do occasionally develop IPF, but it is significantly less common.
Smoking: A Significant Modifiable Risk Factor
Current and former smokers have a significantly higher risk of developing IPF compared to those who have never smoked — even when the smoking history dates back decades. Smoking damages lung tissue and appears to trigger abnormal healing responses that predispose to scarring. If you are still smoking and have been diagnosed with IPF, stopping is the single most important step you can take to slow progression.
Occupational Exposures: A Liverpool Consideration
Long-term exposure to certain dusts and substances is associated with increased IPF risk. This includes metal dust from steel, brass, and lead working, wood dust particularly from hardwoods, stone dust and silica, agricultural and farming dusts, and asbestos. Liverpool’s industrial heritage — shipbuilding, manufacturing, and dock work — means that occupational exposure is a particularly relevant risk factor for many older patients in the city and surrounding areas.
Genetics and Family History
Approximately 10 to 15% of IPF cases have a familial pattern — meaning a close relative also has pulmonary fibrosis. If IPF runs in your family, your own risk is elevated. Certain genetic variants affecting how lung tissue repairs itself have been identified in familial cases. If you have a family history of pulmonary fibrosis, inform your doctor so that symptoms can be monitored proactively.
Acid Reflux and Other Associated Conditions
Over 75% of IPF patients have acid reflux (GERD). Whether reflux contributes to causing IPF through repeated micro-aspiration of stomach acid into the lungs, or whether IPF predisposes to reflux, remains an area of ongoing research. The association is strong enough that I actively screen and treat reflux in all my IPF patients. Some research also suggests that certain viral infections may trigger IPF in genetically susceptible individuals, though this remains unproven.
What Actually Happens Inside the Lungs
Regardless of the triggering factor, the underlying process in IPF follows a consistent pattern. An initial injury damages lung tissue. Instead of normal, clean repair, the lung produces excessive scar tissue. This scarring then continues to progress even after the original trigger is no longer present. The result is progressively stiffer lungs that cannot expand properly. Think of it like a wound that continues producing scar tissue long after it should have healed — the healing process becomes the problem itself.
What You Can Control
While we cannot change past exposures or genetic predisposition, several modifiable factors can influence the course of IPF. Stop smoking immediately if you are still smoking. Treat acid reflux aggressively with medication. Avoid ongoing exposure to lung irritants including dust, chemical fumes, and air pollution. Start anti-fibrotic treatment promptly after diagnosis. Stay as physically active as your condition allows.
Key Points to Know
- IPF most commonly affects people aged 60 to 70 years
- Smoking significantly increases risk — even decades after quitting
- Occupational dust exposure is particularly relevant for older Liverpool patients
- 10 to 15% of IPF cases are familial — inform your doctor of family history
- Acid reflux is present in over 75% of IPF patients and should be treated aggressively
IPF Services at Our Liverpool Clinic
If you have been diagnosed with IPF or are awaiting assessment, specialist respiratory care is available with rapid private appointments at our Liverpool and Manchester clinics.
- IPF Diagnosis and Risk Factor Assessment
- Occupational Lung Disease Assessment
- Anti-Fibrotic Treatment
- Acid Reflux and Associated Condition Management
- Family History and Genetic Risk Counselling
Frequently Asked Questions
Is IPF caused by smoking?
Smoking significantly increases the risk of IPF but does not cause it in isolation. Many non-smokers develop IPF, and most smokers never develop the condition. Smoking is one of several risk factors alongside age, genetics, occupational exposure, and acid reflux.
Can occupational dust exposure cause IPF?
Long-term exposure to metal dust, wood dust, silica, agricultural dusts, and asbestos is associated with increased IPF risk. For patients with a history of occupational exposure, this should be discussed with a respiratory specialist as it may have medico-legal implications.
Is IPF hereditary?
Approximately 10 to 15% of IPF cases have a familial pattern. If a close relative has pulmonary fibrosis, your own risk is elevated. Certain genetic variants affecting lung tissue repair have been identified in familial cases. If you have a family history, discuss monitoring with your GP or respiratory specialist.
Can acid reflux cause IPF?
The relationship between acid reflux and IPF is well established but not yet fully understood. Over 75% of IPF patients have reflux, and repeated micro-aspiration of stomach acid into the lungs is one proposed mechanism for lung injury. Treating reflux aggressively is a standard part of IPF management.
Does IPF run in families?
Yes, in a minority of cases. Familial IPF accounts for around 10 to 15% of diagnoses. If pulmonary fibrosis affects more than one member of your family, inform your respiratory specialist so that appropriate genetic counselling and monitoring can be considered.
Discuss Your IPF Diagnosis With a Specialist in Liverpool
Understanding why you developed IPF and what can be done to slow its progression is the first step to taking control of your condition. Private consultations are available quickly at our Liverpool and Manchester clinics with no lengthy waiting lists.
Book a Consultation — Call 0161 832 2111
About Dr Suman Paul
Dr Suman Paul is a Consultant Respiratory Physician specialising in interstitial lung disease including Idiopathic Pulmonary Fibrosis. He provides expert IPF diagnosis, anti-fibrotic treatment, and ongoing monitoring for patients across Liverpool and Manchester.
Private IPF consultations are available at Pall Mall Medical Liverpool, Pall Mall Medical, 61–67 Oxford Street, Manchester, M1 6EQ.
