Sofia Martinez
Per- and polyfluoroalkyl substances (PFAS) are a large class of man-made fluorinated chemicals added to plastics and other materials to impart water and stain resistance. PFAS are toxic and associated with many health risks, including liver toxicity, thyroid hormone disruption, developmental effects, and cancer. PFAS have been detected in various plastics, including food packaging, plastic bottles, and containers used for household cleaners, pesticides, and personal care products. These containers have been found to leach PFAS into the substances stored in them, leading to significant exposure to these hazardous chemicals. PFAS are also present in other consumer products such as cosmetics, clothing, electronics, and building materials, highlighting the widespread presence of these toxic substances in our daily lives.
| Characteristics | Values |
|---|---|
| Plastic Containers | Fluorinated high-density polyethylene (HDPE) containers used for household cleaners, pesticides, personal care products, and food packaging |
| Food Packaging | Grease-resistant paper, pizza boxes, plastic bottles, plasticized paper, fast-food wrappers, and microwave popcorn bags |
| Non-Stick Cookware | Non-stick pans and baking trays |
| Stain-Resistant Fabrics | Carpets, carpet padding, upholstery, outdoor gear, clothing (rain jackets), yoga pants, sports bras |
| Personal Care Items | Cosmetics, dental floss, shampoos, menstrual products, and women's exercise wear |
| Cleaning Products | Waxes, polishes, and household cleaners |
| Building Materials | Weatherproofing for outdoor materials |
| Electronics | Coatings on cellphones, laptops, and wires |
| Firefighting Gear | Firefighting foam and clothing |
| School Uniforms | Water-resistant clothing |
| Plastics with Surface Coatings | PTFE (Teflon), PVDF, FEP, PFA |
| Plastics with PFAS in Drinking Water | Bottled water |
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What You'll Learn
Fluorinated HDPE containers
PFAS (per- and polyfluoroalkyl substances) are a large class of man-made fluorinated chemicals added to plastics and other materials to impart water and stain resistance. PFAS are toxic and persistent, and exposure to them has been linked to several health risks. They are often used in association with stain- or water-resistant products. PFAS can be present in plastics that have surface coatings or treatments, such as packaging materials and some food contact plastics.
In a study conducted by researchers at the University of Notre Dame, fluorinated HDPE plastic containers were found to contain PFAS. The study measured the ability of PFAS to migrate from the containers into different foods and solvents. Results showed that PFAS could migrate from the containers into food, resulting in significant exposure to hazardous chemicals. The EPA has also released data on the leaching of PFAS in fluorinated packaging, including HDPE containers, and has taken steps to address the issue.
The total amount of PFAS that leached into the solutions increased gradually over the 20-week test period. Higher amounts of PFAS were found in methanol solutions than in water for the same containers. The EPA has determined that liquid products packaged in HDPE containers treated with fluorination technology could leach certain PFAS into the products from the container walls, even with water-based products. PFAS can also migrate from the containers into the environment through landfills, contaminating groundwater and biological systems.
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Food packaging
PFAS (per- and polyfluoroalkyl substances) are a large group of man-made fluorinated chemicals added to plastics and other materials to make them water- and stain-resistant. They are toxic, persistent, and associated with many health risks. PFAS are often used in food packaging, such as plastic containers, coated paper wrappers, and aluminum foil. These chemicals can migrate from the packaging into the food, resulting in significant exposure to hazardous substances.
PFAS have been detected in various food packaging materials, including plastics, grease-resistant paper, and pizza boxes. They are added to make the packaging grease-resistant and to improve its performance during long storage periods. While PFAS are not supposed to migrate from the packaging into the food, studies have shown that this can occur, especially when the food is in contact with the packaging for prolonged periods or at certain temperatures.
In 2024, the U.S. Food and Drug Administration (FDA) announced that grease-proofing materials containing PFAS would no longer be sold for use in food packaging in the U.S. This decision was based on safety concerns and the potential for dietary exposure to PFAS through food packaging. The FDA has also worked with manufacturers to voluntarily phase out the use of PFAS in paper and paperboard food packaging products.
Despite these efforts, PFAS continue to be detected in food packaging. A global study identified 61 PFAS chemicals in food packaging that were not authorized for use in such products. This raises concerns about the potential health risks associated with exposure to these chemicals. The health effects of PFAS exposure include liver toxicity, thyroid hormone disruption, lower antibody response to vaccines, developmental effects, increased risk of certain cancers, cholesterol changes, and immune system effects.
It is important to note that PFAS are not only found in food packaging but can also contaminate food through other sources. For example, PFAS pollution is widespread in oceans, rivers, and lakes, and can contaminate the flesh of fish. PFAS have also been detected in bottled water and dairy products, potentially due to contamination from the packaging.
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Non-stick cookware
PFAS pollution is extremely difficult to clean up once dispersed. A growing body of evidence indicates that PFAS contributes to liver disease, increased cholesterol, impaired response to vaccines, thyroid disease, asthma, lowered fertility, and high blood pressure in pregnant women. Elevated risks of testicular and kidney cancer have been found in highly exposed people.
To avoid PFAS in non-stick cookware, consumers can opt for products that claim to be PTFE-free, such as ceramic-coated non-stick pans. Ceramics are primarily made of silicon dioxide and other metal oxides, not PTFE or any other PFAS. Some brands that offer PFAS-free ceramic-coated non-stick pans include GreenPan, Alva Cookware, and Caraway.
Other alternatives to non-stick pans with PFAS include uncoated pans made with carbon steel, cast iron, stainless steel, enamel cast iron, and glass. These options may not prevent food from sticking as well or be as easy to clean, but they are less likely to contain PFAS.
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Stain-resistant fabrics
PFAS (per- and polyfluoroalkyl substances) are a large group of man-made fluorinated chemicals added to plastics and other materials to impart water and stain resistance. They are toxic, persistent, and associated with many health risks. PFAS are used in food packaging, non-stick cookware, stain-resistant fabrics, personal care items, cleaning products, building materials, and electronics.
PFAS-based foams are used to douse fuel fires, and they are also used in non-stick coatings, gaskets, seals, linings, coatings, wire insulations, and piping. PFAS can be present in plastics that have surface coatings or treatments, such as packaging materials and some food contact plastics.
PFAS is often used in association with stain-resistant products. PFAS chemicals are used to treat carpets, upholstery, outdoor gear, and clothing like rain jackets. PFAS are also found in the padding underneath carpets. PFAS-free alternatives to stain-resistant fabrics include silicone and paraffin.
PFAS exposure has been linked to liver damage, thyroid hormone disruption, lower antibody response to vaccines, developmental effects, increased risk of certain cancers, cholesterol changes, and immune system effects. These toxic "forever chemicals" can be found in a wide range of products we wear, sleep on, and eat our food from.
To reduce exposure to PFAS, consumers can avoid products with claims of stain or water resistance and look for products labeled "PFAS-free."
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Personal care items
PFAS (per- and polyfluoroalkyl substances) are a large class of man-made fluorinated chemicals added to plastics and other materials to impart water and stain resistance. They are toxic, persistent, and associated with many health risks. PFAS are often used in association with stain- or water-resistant products.
PFAS can be present in plastics that have surface coatings or treatments, such as packaging materials and some food contact plastics. PFAS are also used in food packaging, including paper food packaging like fast-food wrappers and microwave popcorn bags, to make them grease-resistant.
PFAS are found in personal care items such as cosmetics, dental floss, shampoos, nail polish, and eye makeup. A study by the Food and Drug Administration found 31 different PFAS in 570 cosmetic products over 12 months ending in March 2023. Another study by researchers from the University of Notre Dame, Indiana University, and the University of Toronto found PFAS in a wide variety of cosmetic products, including lipsticks and mascaras.
PFAS exposure has been linked to several health issues, including liver damage, thyroid hormone disruption, lower antibody response to vaccines, developmental effects, increased risk of certain cancers, cholesterol changes, and immune system effects.
It is important to note that cosmetic companies are required to disclose their product ingredients, including PFAS, and consumers should be aware of the potential risks associated with the use of personal care items containing PFAS.
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Frequently asked questions
PFAS stands for per- and polyfluoroalkyl substances. They are a large class of man-made fluorinated chemicals added to plastics and other materials to impart water and stain resistance.
PFAS are used in a variety of plastic and consumer products, including food packaging, non-stick cookware, stain-resistant fabrics, personal care items, cleaning products, building materials, and electronics. They are also found in firefighting foam and various industrial products.
PFAS can migrate from plastic containers into food, especially when stored for long periods. They can also enter the food chain through agricultural crops treated with pesticides stored in PFAS containers or through fish and dairy products contaminated by PFAS pollution in water sources.
PFAS exposure has been linked to various health issues, including liver toxicity, thyroid hormone disruption, immunotoxicity, developmental effects, and an increased risk of certain cancers.
Yes, organizations like the EPA in the US and the European Chemicals Agency (ECHA) have proposed regulations to eliminate PFAS from the national water supply and restrict the use of PFAS in various products.
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