A University of Birmingham analysis led by Dr Mohamed Abdallah, and commissioned by environmental campaign group Foodrise, has detected PFAS (Per- and polyfluoroalkyl substances a group of over 10,000 synthetic chemicals used since the 1950s to make products resistant to water, grease, and heat) in 30 meat, dairy and fish products sold in Tesco. This raises concerns about the widespread presence of these persistent chemicals in the UK food supply. PFAS are highly persistent in the environment and can accumulate in living organisms over time. Previous research has linked some PFAS compounds to health concerns, including immune system effects, reproductive issues and certain cancers, although the implications of long-term dietary exposure at low levels remain under investigation.
Researchers tested a range of Tesco own-brand and branded items and PFAS were identified in all samples, with the highest concentrations found in fish products such as cod fillets (1.198 ng/g) and sardines in brine (1.192 ng/g). Turkey sausages, smoked mackerel and milk products also contained measurable levels, though generally at lower concentrations.
Dr Abdallah said the widespread detection across all samples was particularly notable. He added that the results highlight the need for improved monitoring of PFAS in food and a better understanding of how these chemicals enter the food chain, including through environmental sources such as water, soil and agricultural inputs.
The findings come amid increasing regulatory attention on PFAS in the UK. Earlier this year, the government introduced its first national PFAS Plan, aimed at improving monitoring and reducing exposure. The Environmental Audit Committee has also called for tighter controls on PFAS in food contact materials and other consumer products.
Tesco said its products comply with all relevant UK and EU safety regulations. A spokesperson stated that PFAS levels identified in the tested products fall within legal limits and that the company is working with suppliers to meet upcoming regulatory changes.
Scientists note that there is ongoing debate around safe exposure levels for PFAS, particularly given their ability to accumulate in the human body over time. The European Food Safety Authority has proposed a weekly intake limit for certain PFAS, though some researchers argue that cumulative exposure from multiple sources is not yet fully understood.
While the study does not suggest an immediate risk from any individual product, the consistent detection of PFAS across all samples adds to growing evidence that these chemicals are widespread in the food system, reinforcing calls for further research, monitoring and regulatory scrutiny.
Foodrise (2026). Tesco is selling us [[‘forever chemicals’]]. Foodrise. https://foodrise.org.uk/tesco-forever-chemicals/
Department for Environment, Food & Rural Affairs (2026). PFAS Plan. GOV.UK. https://www.gov.uk/government/publications/pfas-plan.
Cornwell, B. (2026). Landmark study finds PFAS in every Tesco food product tested. New Food. https://www.newfoodmagazine.com/news/landmark-study-finds-pfas-in-every-tesco-food-product-tested/2135745.article?utm_campaign=21991_NF%20-%20Newsletter%20-%20Bruker-%2019.06.2026&utm_medium=email&utm_source=New%20Food&dm_i=7ZP7
