Scientists have identified air pollution as a major cause of rising lung cancer cases among non-smokers.
While smoking remains the leading cause, accounting for 60% of cases, a study in The Lancet Respiratory Medicine highlights that air pollution contributed to 15% of global adenocarcinoma cases (a type of non-small cell lung cancer) in 2022.

This is particularly concerning as smoking rates decline worldwide, with non-smokers increasingly affected. The study emphasizes the urgent need to address air pollution, especially in urban areas, as 99% of the global population lives in places with poor air quality.
Researchers warn that without action, the link between air pollution and lung cancer will grow stronger.

Scientists have identified a worrying reason behind the rise in lung cancer cases amongst non-smokers.

What are the main symptoms of lung cancer?
According to the NHS, the main warning signs for lung cancer include:
a cough which does not go away after three weeks
persistent breathlessness
regular chest infections
coughing up blood
unexplained weight-loss
persistent tiredness or fatigue
an ache or pain when breathing or coughing