The progressive scarring of the lungs that steals breath from the body

Science · Published 24 October 2026 Swipe more like this →

In short: Idiopathic pulmonary fibrosis (IPF) is a chronic disease where the lung tissue undergoes progressive scarring. While the exact cause remains a mystery, the physical result is a destruction of the lung's architecture, making it increasingly difficult for the body to exchange gas and maintain life.

IPF is characterized by the destruction of lung parenchyma and architecture, leading to a loss of lung compliance. This structural damage compromises gas exchange, resulting in progressive exertional dyspnea, a dry cough, and significant fatigue. Pathologically, the disease involves complex mechanisms including extracellular matrix remodeling, fibroblast activation and proliferation, immune dysregulation, and cell senescence. The way this scarring forms might be primarily driven by irregular healing and injury to the alveolar epithelium.

The disease primarily affects people aged 70 or over, though it can begin at younger ages, with an average onset of about 65 years. While the cause is idiopathic, it is often linked to environmental factors like long-term exposure to metal, wood, or asbestos dust, as well as genetic factors and a history of cigarette smoking. In many cases, the disease is more prevalent in males, who account for about 70% of patients. The condition is progressive and can lead to serious complications, including chest infections, pulmonary hypertension, and heart failure.

Current medical management focuses on slowing disease progression and managing symptoms rather than providing a cure. The mainstay therapies are oral antifibrotic drugs, specifically pirfenidone and nintedanib, which can improve quality of life and attenuate symptoms. However, lung transplantation remains the only treatment shown to increase life expectancy. Without intervention, the condition is often fatal, with a survival rate of 3–5 years after diagnosis, and a likelihood of living 5 years from the time of diagnosis ranging from 20% to 40%.

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