Can microplastics from food and water trigger airway inflammation and worsen asthma?

What's actually in it

You breathe in microplastics from household dust, indoor air, and synthetic fabrics every day. These particles settle in your airways and lungs. For people with asthma, additional irritants can trigger inflammation and worsen symptoms. Microplastics act as foreign particles that the immune system tries to fight.

What the research says

A 2026 study in Tuberc Respir Dis tested how microplastic exposure affects airway inflammation in an acute asthma model. The researchers found that microplastics worsened airway inflammation and increased immune cell recruitment to the lungs. The inflammatory response was stronger than with the asthma trigger alone.

For the millions of people living with asthma, microplastics may be an unrecognized trigger making their condition harder to control.

Use a HEPA air purifier in bedrooms. Dust with damp cloths. Choose natural-fiber bedding and clothing to reduce microplastic shedding indoors.