When we think of the devastating toll that plastic pollution can have, it is usually images of turtles caught in single-use bags or piles of plastic bottles in landfill that we conjure up for most of us, it is an environmental problem.
But there is emerging evidence that plastic waste could become a health issue, too.
The problem lies with plastic as it breaks down into tiny particles so-called microplastics, which are 5 mm in length (the size of a lentil), or less.
These tiny particles are everywhere: they are produced from the breakdown of bags and bottles, the wear and tear of the soles on our shoes as we walk, and the tyres on our cars as we drive.