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• Red blood cell folate modifies the association between serum per- and polyfluoroalkyl substances and antibody concentrations in U.S. adolescents

  Science

  30 Jan 2023 | Environ. Sci. Technol.

  Associations between higher serum PFAS and lower disease antibodies were found to be significant only in adolescent groups with lower folate levels, suggesting that folate may be used as a mitigation measure against immune-related PFAS effects.

• Leaching of Perfluoroalkyl Acids during Unsaturated Zone Flushing at a Field Site Impacted with Aqueous Film Forming Foam

  Science

  23 Jan 2023 | Environ Sci Technol

  Remedial approaches that remove only a modest fraction of the PFAA mass in soil may be protective of underlying groundwater, particularly for some perfluorinated sulfonates.

• Pennsylvania to limit PFAS in drinking water

  Policy

  14 Jan 2023

  The new rule sets maximum contaminant levels in drinking water for two forms PFAS – in order to protect the public from potential adverse health effects linked to exposure to PFOA and PFOS.

• Occurrence and implications of per and polyfluoroalkyl substances in animal feeds used in laboratory toxicity testing

  Science

  10 Jan 2023 | Sci Total Environ

  PFAS contamination in animal feed was found to be pervasive, which is significant because unintended PFAS exposure in control animals from feed can significantly bias toxicity testing.

• Associations between per and polyfluoroalkyl ether sulfonic acids and vitamin D biomarker levels in Chinese newborns

  Science

  5 Jan 2023 | Sci Total Environ

  Exposure to legacy PFAS, including PFTrDA, PFHxS, and PFOS, might disturb vitamin D status in newborns.

• Emerging and legacy contaminants in common minke whale from the Barents sea

  Science

  4 Jan 2023 | Environ Pollut

  PFAS levels were higher in fetuses than male or female adult whales, and PFOS levels were higher than those detected from the same population eight years previously.

• Contact to perfluoroalkyl substances and thyroid health effects: A meta-analysis directing on pregnancy

  Science

  4 Jan 2023 | Chemosphere

  A systematic review found that PFOS, PFOA, and PFDA exposures were associated with thyroid disruption in pregnant women, who were more sensitive to PFAS exposure in the first six months of pregnancy.

• Early-life exposure to per- and polyfluoroalkyl substances and infant gut microbial composition

  Science

  3 Jan 2023 | Environ. Epi.

  PFAS may increase infant gut microbiome diversity, which has been associated with an increased risk of infection.

• Per- and polyfluoroalkyl substances (PFAS) in breast milk and infant formula: A global issue

  Science

  3 Jan 2023 | Environ. Res.

  Breast milk concentrations of PFOA and PFOS often exceed children’s drinking water screening values, and limited information on infant formula means that families cannot generally know whether their infant’s exposures exceed safe levels.

• A systematic evidence map of chronic inflammation and immunosuppression related to per-and polyfluoroalkyl substance (PFAS) exposure

  Science

  30 Dec 2022 | Environ Res

  Several PFAS commonly found in the environment may induce immunosuppression and chronic inflammation, two key characteristics of carcinogens.

• Concentrations of Per- and Polyfluoroalkyl Substances in Paired Maternal Plasma and Human Milk in the New Hampshire Birth Cohort

  Science

  27 Dec 2022 | Environ Sci Technol

  Maternal PFOA and PFOS serum concentrations correlated with milk concentrations, and while milk concentrations were lower, about 6.5% of infants were estimated to be exposed to enough PFAS via milk to have long-term health impacts.

• Locally caught freshwater fish across the United States are likely a significant source of exposure to PFOS and other perfluorinated compounds

  Science

  27 Dec 2022 | Environ Res

  PFAS are widely detected in freshwater fish across the United States at very high concentrations and fish may be a main source of exposure, especially for communities that depend on fish for sustenance and traditional cultural practices. For example, PFOS exposure from one average serving of freshwater fish is equivalent to one month of exposure from drinking water with 48 ppt PFOS.

• Accumulation and transport of atmospherically deposited PFOA and PFOS in undisturbed soils downwind from a fluoropolymers factory

  Science

  19 Dec 2022 | Adv. Environ.

  PFAS contaminates soil in urban, industrialized areas through atmospheric deposition, where it can penetrate through the soil and pollute groundwater.

• Changes in perfluoroalkyl substances (PFAS) concentrations in human milk over the course of lactation: A study in Ronneby mother-child cohort

  Science

  15 Dec 2022 | Environ Res

  PFOA concentrations in breast milk decreased over the course of lactation by 12% per month, while PFOS and PFHxS showed small changes.

• Emerging Contaminants and New POPs (PFAS and HBCDD) in Endangered Southern Resident and Bigg’s (Transient) Killer Whales (Orcinus orca): In Utero Maternal Transfer and Pollution Management Implications

  Science

  13 Dec 2022 | ACS

  7:3-fluorotelomer carboxylic acid was the primary PFAS detected in killer whales' skeletal muscle and liver samples in the Northeastern Pacific Ocean, followed by PFOS, PFOA, and PFHxS.