How many pack-years to develop COPD?

Risk becomes significant beyond 10-15 pack-years (= 1 pack/day for 15 years, or 2 packs/day for 7-8). But some develop COPD earlier, with a genetic push.

Not directly, but there is a rare genetic cause: alpha-1 antitrypsin deficiency, which causes early-onset emphysema. Worth considering in young patients or non-smokers with COPD.

Does vaping cause COPD?

Long-term studies are still missing. To date, no solid evidence of COPD caused by vaping alone, unlike with cigarettes. Vigilance still warranted.

If I already have COPD, am I doomed to a wheelchair and oxygen?

No. At early and moderate stages, many patients live a normal active life, particularly after quitting. Only advanced (IV) stages require long-term oxygen therapy.

Why is COPD so little known?

Because it is silent, has long been called by different terms ('chronic bronchitis', 'emphysema'), and has had few dedicated awareness campaigns. World COPD Day (3rd Wednesday of November) is trying to change that.

COPD and emphysema: the silent lung disease of tobacco that affects millions

COPD: 3.5 million people affected in France, 20,000 deaths/year, 80 % caused by tobacco. A silent, under-diagnosed, irreversible — but slowable — disease.

May 13, 2026 Aria

You probably know lung cancer. You may know less about COPD — chronic obstructive pulmonary disease. Yet it affects 3.5 million people in France, kills more than lung cancer in some age groups, and remains largely under-diagnosed. The good news: quitting tobacco stops its progression cold.

What is COPD?

Chronic obstructive pulmonary disease (COPD) is a chronic respiratory disease characterised by permanent obstruction of the airways. It combines two processes, often together:

It is a silent and progressive disease. For years, symptoms are blamed on 'age', 'being out of shape', or 'repeat bronchitis'. The diagnosis often arrives once the disease is well advanced.

Why tobacco is the number-one cause

80 % of COPD cases are caused by active smoking (with passive smoking, occupational exposure and pollution making up the rest).

Société de Pneumologie de Langue Française, 2023

Three mechanisms:

Chronic inflammation of the bronchi induced by fine particles, acrolein and other smoke irritants.
Progressive destruction of the alveoli by elastase, an enzyme released in excess when inflammation persists.
Paralysis of the cilia that normally clean the airways — leading to mucus build-up.

COPD is a silent ticking bomb. By the time the diagnosis comes in, you have often already lost 30-40 % of your lung function — without realising it.

Selon les pneumologues

The signs to recognise

Myth vs reality

Spirometry: the test that changes everything

Spirometry measures your breath. You inhale fully, then exhale as hard and long as possible into a device.

Two key indicators:

FEV1 (forced expiratory volume in 1 second) — the air you can blow out in one second.
FVC (forced vital capacity) — the total exhalable air.

A FEV1/FVC ratio below 0.7 confirms the bronchial obstruction typical of COPD. Severity is then graded by FEV1 (GOLD stages 1 to 4).

€3.7 billion in annual French spending on chronic respiratory diseases. COPD makes up a major share.

Cour des Comptes, report on respiratory health in France, 2024

What happens when you quit smoking

A few days cough may temporarily worsen (cilia restart).
2-4 weeks morning sputum decreases.
3-6 months measurable FEV1 improvement in most patients.
1 year the lung-function decline rate returns close to a non-smoker's. COPD almost stops progressing.
Several years fewer exacerbations, better quality of life.

Female specifics

COPD prevalence in women is rising — since female smoking caught up with men's. Specifics:

And if you already have COPD?

Quitting tobacco remains the absolute priority. Beyond that:

Vaccinations for flu, COVID-19 and pneumococcus (to limit exacerbations).
Pulmonary rehabilitation: a structured programme (physio, exercise, education) that genuinely improves quality of life.
Bronchodilators and inhaled corticosteroids depending on severity.
Oxygen therapy at advanced stages.

In United Kingdom

Your questions

How many pack-years to develop COPD?

Risk becomes significant beyond 10-15 pack-years (= 1 pack/day for 15 years, or 2 packs/day for 7-8). But some develop COPD earlier, with a genetic push.
Is COPD hereditary?

Not directly, but there is a rare genetic cause: alpha-1 antitrypsin deficiency, which causes early-onset emphysema. Worth considering in young patients or non-smokers with COPD.
Does vaping cause COPD?

Long-term studies are still missing. To date, no solid evidence of COPD caused by vaping alone, unlike with cigarettes. Vigilance still warranted.
If I already have COPD, am I doomed to a wheelchair and oxygen?

No. At early and moderate stages, many patients live a normal active life, particularly after quitting. Only advanced (IV) stages require long-term oxygen therapy.
Why is COPD so little known?

Because it is silent, has long been called by different terms ('chronic bronchitis', 'emphysema'), and has had few dedicated awareness campaigns. World COPD Day (3rd Wednesday of November) is trying to change that.

sources

British Thoracic Society, COPD guidelines, 2023.
British Lung Foundation / Asthma + Lung UK, COPD statistics for the UK, 2024.
NHS England, Respiratory disease — long term plan implementation update, 2024.
Medical Research Council (MRC), COPD scientific dossier.