23 Oct 2018 --- New research from Medical University of Vienna and the Environment Agency Austria has found particles made of polypropylene (PP), polyethylene-terephthalate (PET) and others in human stools. Presented at the 26th UEG Week in Vienna, the results show that every single stool sample tested positive for the presence of microplastic and up to nine different plastic types were identified. Although the study was small in scale – comprising eight participants from a number of different countries in Asia and Europe – it points to the presence of microplastics in the human food chain.