What the study found: Limiting plastic touchpoints in food and personal-care products was associated with lower urinary levels of some plastic-associated chemicals (PACs) over 7 days. The intervention maintained daily energy intake while reducing plastic exposure.
Why the authors say this matters: The study suggests that everyday plastic exposure may be reduced by changing how food and personal-care products are sourced and packaged, and that these changes can lower some urinary PAC levels.
What the researchers tested: The Plastic Exposure Reduction Transforms Health Trial included an observational cohort of 211 Australian participants and a 7-day pilot randomized controlled trial in 60 participants. Intervention groups received plastic-free kitchenware, low-plastic personal-care products, and food sourced from more than 100 producers designed to minimize plastic contact from production to consumption; the control group received no intervention.
What worked and what didn't: In the cohort study, highly processed, plastic-packaged, and canned foods were important modifiable factors for urinary PAC metabolite levels, and higher urinary di(2-ethylhexyl) phthalate metabolites were negatively associated with cardiometabolic biomarkers. In the randomized trial, the intervention decreased plastic exposure and reduced urinary mono-n-butyl phthalate, monobenzyl phthalate, and bisphenol A by 37.5%, 53.5%, and 59.7%, respectively. Foods with minimal or no contact with plastic had the broadest effect on PAC excretion, and low-plastic personal-care products alone independently decreased urinary mono-n-butyl phthalate.
What to keep in mind: The trial was short, lasting 7 days, and the abstract does not describe longer-term outcomes. The abstract also does not provide detailed limitations beyond the study design and scope.
Key points
- A 7-day low-plastic intervention reduced urinary levels of mono-n-butyl phthalate, monobenzyl phthalate, and bisphenol A.
- The intervention maintained daily energy intake while lowering plastic exposure.
- Foods with minimal or no contact with plastic had the broadest effect on PAC excretion.
- Low-plastic personal-care products alone independently reduced urinary mono-n-butyl phthalate.
- In the cohort study, highly processed, plastic-packaged, and canned foods were linked to urinary PAC metabolite levels.
Disclosure
- Research title:
- Low-plastic diets reduced select urinary plastic-associated chemicals
- Authors:
- Amelia J. Harray, Andrew D. Lucas, Susan E. Herrmann, Philip S. Vlaskovsky, Ahmed Elagali, Bhedita J. Seewoo, Dick C. Chan, Davide Chiarugi, Rishabh Kulkarni, Michelle Trevenen, Xianyu Wang, Jochen Mueller, Kevin V. Thomas, Hannah Papendorf, Claire Miller, Silvana Gaudieri, Tony Smith, Sam Salman, Kevin Murray, Christos Symeonides, S R Dunlop, Gerald F. Watts, Jacob Warger, Kathryn Linge, Zaheerah Haywood, Andrea Vermeersch, Lydia Rock, Lelinh Duong, Kim Jarvie, Anna Henry, Tamsin Johnson, Amy Prosser, Alex H. Liu, Michaela Lucas
- Institutions:
- The Kids Research Institute Australia, The University of Western Australia, Florey Institute of Neuroscience and Mental Health, Government of Western Australia Department of Health, SIB Swiss Institute of Bioinformatics, Sir Charles Gairdner Hospital, The University of Queensland, Pathwest Laboratory Medicine, Royal Children's Hospital, Royal Perth Hospital, ChemCentre, Princess Margaret Hospital for Children
- Publication date:
- 2026-04-21
- OpenAlex record:
- View
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