COPD: The Silent Disease of Smokers
3.2 million deaths per year worldwide
Dr. Bernard Gauthier
Pulmonologist
In simple terms
Progressive shortness of breath, chronic cough, sputum: COPD slowly destroys the lungs. Smoking cessation is the only treatment that slows the disease.
An underdiagnosed disease
Chronic obstructive pulmonary disease (COPD) is a respiratory disease characterized by permanent and progressive airway obstruction. It affects about 380 million people worldwide and causes 3.2 million deaths per year. It is estimated that 2 out of 3 patients are not diagnosed.
Causes and risk factors
Smoking is responsible for 80-90% of cases. Occupational exposure to dusts, fumes, and chemicals, indoor air pollution (biomass), and repeated respiratory infections in childhood are other factors. Alpha-1-antitrypsin deficiency (rare genetic cause) can also be involved.
Evolution and complications
COPD progresses through 4 stages (GOLD I to IV). Shortness of breath gradually worsens, first limiting effort, then daily activities, and finally rest. Exacerbations (acute flare-ups) accelerate respiratory decline. Chronic respiratory failure requires home oxygen therapy.
Management
Smoking cessation is the only treatment that significantly slows the loss of lung function. Long-acting bronchodilators and inhaled corticosteroids improve symptoms. Respiratory rehabilitation (exercise, physiotherapy) is a cornerstone of treatment too often neglected.
The words explained
Medical terms used above, in everyday language.
- Chronic
- A problem that lasts a long time, usually more than three months, and often comes back.
- Acute
- Something that starts suddenly and lasts a short time.
- Symptom
- A sign you can feel or see that something is wrong, like pain, tiredness or a rash.
- Diagnosis
- The moment a doctor identifies which illness is causing your symptoms.
- Risk factor
- Something that makes an illness more likely, such as smoking or family history.
- Genetic
- Passed down in your family through your genes.
When should you see a doctor?
- Your symptoms last more than a few weeks or keep coming back.
- They get worse quickly, or stop you doing everyday things.
- You notice sudden pain, breathing trouble, fainting or bleeding — seek urgent care.
- You already take medication and want to change anything about it.
This article explains general health information. It does not replace advice from your own doctor.
Frequently asked questions
- What is COPD: The Silent Disease of Smokers?
- Progressive shortness of breath, chronic cough, sputum: COPD slowly destroys the lungs. Smoking cessation is the only treatment that slows the disease.
- What are the main symptoms or signs of COPD: The Silent Disease of Smokers?
- Common signs vary from person to person. The article above lists the symptoms to watch for, how they progress, and when they need medical attention.
- When should you see a doctor for COPD: The Silent Disease of Smokers?
- See a doctor if symptoms last more than a few weeks, get worse quickly, stop you doing everyday things, or if you notice sudden pain, breathing trouble, fainting or bleeding.
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