Brewers of ale and beer in England have for centuries used the swim bladders of locally caught fish in barrels of beer. It is used to make the beer clear, bright and more attractive. It is odourless and today a gelatine, isinglass derived from the organ is in every pint we drink.
Roughly 5 grams of plastic is consumed weekly in the course of daily life, about the weight of a credit card. It has been detected in tap and bottled water, seafood and beer and it has also been found in human stool samples, confirming that people ingest the particles.
New research, published in the journal Environmental Science and Technology, took the data from 26 previous studies that measure the amounts of microplastic particles in fish, shellfish, sugar, salt, beer and water. The Guardian Newspaper, 5 June 2019