New Planet Ark report analyses health and environmental risks of PFAS chemicals
By Roy Tasker 24 May 2022
PFAS chemicals - everywhere and in every one.
New research from Planet Ark analyses the health and environmental risks of PFAS, a common group of manufactured chemicals used in products that resist grease, water, and oil. The report, The Health and Environmental Risks of PFAS: A Focus on Food Contact Packaging, analyses why PFAS chemicals pose a potential hazard to human health and the environment with a special focus on food contact packaging.
What are PFAS and why are they hazardous?
Per- and polyfluoroalkyl substances, (PFAS), are a group of manufactured chemicals typically applied as a coating or treatment to products as they are resistant to water, oil and heat. They are used in products including non-stick cookware, water resistant clothing and footwear, cosmetics and food packaging.
A growing body of research is exposing PFAS as chemicals that should be avoided due to their persistence and mobility in the environment. PFAS are not broken down by factors such as sunlight, water, exposure to air or temperature variability meaning the vast majority of all PFAS ever produced are still circulating today. They have also been found in over 99% of people tested.
Human health concerns about exposure to PFAS
Studies on human health demonstrate correlation between high PFAS exposure and a range of health impacts, including breast, testicular and kidney cancers, elevated cholesterol, and a range of developmental issues in foetuses. Studies have also highlighted the potential for PFAS to impair the function of the immune system, reducing the ability to fight disease and the response to vaccines.
Exposure can occur via ingestion of contaminated food and drinking water, use of consumer products containing PFAS, transfer from mother to child during pregnancy and breastfeeding and through occupational exposure.
Environmental concerns about PFAS
Due to the ability of PFAS to travel in water and in the air as dust and aerosols, they have spread all over the planet, even to remote polar regions. PFAS can enter and contaminate aquatic and terrestrial environment from manufacturing processes or through supply chains and disposal, where they enter the food chain and have a range of impacts on ecosystems.
PFAS in fibre-based food packaging
This report highlights the use of PFAS in fibre-based food packaging products and the potential associated issues. Studies on microwave popcorn have highlighted the ability of PFAS to be transferred from packaging to the food inside at high temperature and subsequently ingested, exposing consumers to PFAS, albeit at low levels.
A recent Planet Ark and Australian Packaging Covenant Organisation (APCO) study confirmed the presence of PFAS significantly above background levels in almost a third of packaging samples tested, with concentrations consistent with those found in comparable studies of food fibre packaging in the US, UK, and the EU. Alternative treatments for food packaging are available, with a second study showing grease proof paper can be manufactured essentially PFAS-free.
A case for regulating PFAS in Australia
Research into the health and environmental impacts of PFAS is ongoing, but evidence supports the case for transitioning away from these chemicals. Though a causal relationship with several health endpoints has not been fully established, there is correlation between high PFAS exposure and detrimental health impacts. Evidence of the widespread dispersal and persistence of these chemicals in the environment has been demonstrated and is cause for concern.
In Europe and some US states, regulations have been put in place to ban the use of PFAS in a range of products. The issue is that in many cases PFAS are replaced with ‘regrettable substitutes’ that also pose risks to human and environmental health.
Guided by the precautionary principle, Planet Ark recommends avoiding PFAS where possible and transitioning to safer alternatives. The precautionary principle outlines that “when an activity raises threats of harm to human health or the environment, precautionary measures should be taken even if some cause-and-effect relationships are not fully established scientifically.”
The aim of this report is to promote awareness of the health and environmental risks of PFAS and support a transition to the use of lower-risk chemicals. Where alternative food packaging products are available, such as PFAS-free grease proof paper, these should be supported.
Read the report in full here.
Roy joined Planet Ark in July 2018 after 32 years as a university academic in chemistry in Australia and the US. His passion is communicating science through visualisation, particularly explaining chemistry concepts at the molecular level. Roy is a recent graduate of Al Gore's Climate Reality Training program. At Planet Ark he uses this experience to help people to understand important scientific issues relevant to climate change and sustainability to promote meaningful behaviour change.
