Can microplastics from everyday products make asthma and COPD worse?

What's actually in it

You inhale microplastic fibers and particles from synthetic clothing, carpets, foam furniture, and household dust every day. These airborne particles are typically polyester, nylon, polypropylene, and acrylic. They're small enough to reach the deepest parts of your lungs, the alveoli, where gas exchange happens.

For the estimated 400 million people worldwide living with asthma or COPD, any additional lung irritant is a concern.

What the research says

A 2026 review in Eur Respir Rev examined how microplastics act as environmental modifiers of lung disease. Rather than just causing new problems, microplastics make existing conditions worse in specific ways.

In asthma, inhaled microplastics amplified the Th2 immune response, the allergic pathway that drives airway swelling and mucus production. In COPD, they accelerated the loss of lung elasticity and worsened the chronic inflammation that slowly destroys lung tissue.

Microplastics also impaired mucociliary clearance, the lungs' built-in cleaning system that sweeps particles and mucus out of the airways. When this system slows down, irritants stay in the lungs longer, giving them more time to cause damage.

The review also noted that microplastics carry adsorbed pollutants like heavy metals and PAHs on their surface, delivering a concentrated toxic payload directly to lung tissue.

Use HEPA air purifiers, choose natural fiber textiles over synthetic, and vacuum with a HEPA filter to reduce the microplastic load in your indoor air.