PFAS are man-made chemicals that have been used in industry and consumer products worldwide since the 1950s. They have been used in non-stick cookware, water-repellent clothing, stain resistant fabrics and carpets, some cosmetics, some firefighting foams, and products that resist grease, water, and oil.
PFAS and their health effects
The potential for health effects from PFAS in humans is not well understood. PFOS, PFOA, PFHxS and PFNA have generally been studied more extensively than other PFAS. In general, animal studies have found that animals exposed to PFAS at high levels resulted in changes in the function of the liver, thyroid, pancreas and hormone levels.
- What are PFAS?
- Understanding health effects
- How can I be exposed to PFAS?
- What are the health effects?
- Fact sheet [PDF – 444 KB]
- Frequently asked questions (Tox FAQs)
- What are the chemicals in the PFAS group?
PFAS Family Tree [PDF – 249 KB] | PFAS Family Tree [PDF – 406 KB] (Spanish version)
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