“Breathing in Microplastics Can Damage the Lungs,” Study Warns

Breathing in microscopic plastic particles may inflame and damage the lungs, according to new research released by the University of Technology Sydney.

The study found that inhaled microplastics can trigger inflammation in lung tissue, potentially increasing the risk of respiratory conditions including asthma, chronic obstructive pulmonary disease (COPD), pulmonary fibrosis and lung cancer.

In a statement issued Tuesday, the university said airborne plastic particles—commonly shed from synthetic carpets, clothing and household dust—could add to existing air pollution risks.

Data from the World Health Organization estimate that air pollution contributes to about seven million premature deaths each year worldwide. Researchers say the presence of microplastics in the air may further compound those dangers.

Microplastics are plastic fragments smaller than five millimetres that are produced when larger plastic materials break down or release fibres, explained lead author Keshav Raj Paudel, a senior researcher in chronic respiratory diseases at UTS.

Because of their small size, the particles can travel deep into the lungs. Paudel noted that the lungs’ broad surface area and limited ability to expel fine particles make them especially susceptible to damage.

The research also reported higher concentrations of microplastics in lung cancer tumours compared with healthy lung tissue, suggesting a possible link that warrants further investigation.