Microplastics are turning up everywhere; in our lungs, blood, even our brains. They’re tiny, toxic, and almost impossible to avoid. So what can we do about them? Today, Emma Kennedy speaks to Dr Antaya March and Prof Fay Couceiro from the University of Portsmouth to find out what this means for our health and the long term consequences of ignoring this tiny problem.

WHY? is presented by Emma Kennedy. Produced by Liam Tait and Kathleen Johnston. Edited by Robin Leeburn. Theme music by Jade Bailey. Managing editor: Jacob Jarvis. Group editor: Andrew Harrison. Artwork by James Parrett. Additional music is from Artlist.io. WHY? is a Podmasters Production.

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What are microplastics doing to our bodies?