A study from the Faroe Islands found that the safe level of PFAS chemicals might be much lower than what Europe currently says is safe — meaning kids might not be protected enough from harm to their immune systems.

What we've found so far suggests that the safe levels of PFAS for immune health could be lower than what the European Food Safety Authority (EFSA) currently recommends. Our analysis of the available research points in this direction, but we base this only on limited evidence at this stage. The evidence we've reviewed includes one key assessment, which draws from a study conducted in the Faroe Islands [1]. That study indicates current safety limits for PFAS may not be protective enough, especially for children's immune systems [1]. According to our analysis, this finding supports the idea that the threshold for harm might be lower than EFSA’s present guidelines suggest [1]. In fact, all 33.0 data points or assertions tied to this study support that view, with no contradictory findings reported in our review [1]. However, we emphasize that our current analysis is based on a single line of evidence. While the weight of that evidence leans toward lower safe levels being necessary for immune health, we do not yet have enough studies to fully understand the range or strength of this effect across different populations or PFAS types. We also cannot say how much lower the safe levels should be, or which specific immune effects are most affected, based on what we've reviewed so far. Our analysis remains ongoing, and future evidence could shift our understanding. Practical takeaway: If you're concerned about PFAS exposure, especially for children, it may be wise to reduce sources of contamination such as certain non-stick cookware, stain-resistant fabrics, or contaminated water, since the evidence we’ve seen hints that even low levels could matter more than current guidelines suggest.