The German Federal Institute for Risk Assessment (BfR) has presented a request to the European Food Safety Authority (EFSA) asking for a scientific opinion on the occurrence of microplastic and nanoplastic particles in food.
The BfR is concerned mainly about secondary microplastic particles (ranging from 0.001 mm to 5 mm in diameter) produced through chemical and physical aging and degradation of plastic products like bags and bottles. This is thought to be the main source of microplastic particles entering the environment.
Environmental microplastic could easily find its way into food, especially seafood, but the BfR says that there is very little robust data on the chemical composition, particle siz, or concentration of microplastic particles in food. An assessment of the risk to public health from the consumption of contaminated food is therefore not currently possible.
More details (in German) can be found here.