New research from the US and Canada suggests babies are exposed to at least 42 per- and polyfluoroalkyl substances (PFAS), known as 'forever chemicals,' before birth. These chemicals, used extensively in industry, persist in the environment and human bodies.
A study analyzing umbilical cord blood samples utilized a comprehensive scanning technique, revealing a far broader range of PFAS than previous targeted analyses. This advanced method detected 42 PFAS, a substantial increase from the 8 identified by older methods, with only 4 overlapping.
Researchers highlight that this comprehensive approach is critical for understanding the full scope of prenatal exposure. "Our findings suggest that how we measure PFAS really matters," stated biostatistician Shelley Liu from the Icahn School of Medicine at Mount Sinai. "When we look more comprehensively, we see that babies are exposed to far more PFAS chemicals before birth than we previously realized."
The study's findings challenge earlier assumptions, including a perceived difference in PFAS exposure between first-born and subsequent children, which disappeared with the broader analysis. This suggests a significant underestimation of the PFAS problem.
While this study did not assess health outcomes, existing research links PFAS to reduced kidney function and increased cancer risk. The researchers aim to expand this analysis to track long-term health effects and promote earlier identification and prevention strategies during pregnancy.