Babies Born with Higher Chemical Burden: PFAS Exposure in Umbilical Cord Blood Revealed
Babies are born with a chemical burden significantly higher than previously understood, according to a new study published in Environmental Science & Technology. Researchers have discovered that newborns are exposed to a wider range of “forever chemicals,” known as per- and polyfluoroalkyl substances (PFAS), before birth than earlier testing methods could detect.
PFAS are a group of thousands of synthetic chemicals found in numerous everyday products, including nonstick cookware, stain-resistant fabrics, food packaging, and firefighting foams. They are called “forever chemicals” because they do not break down easily in the environment or the human body, leading to their persistence and accumulation over time.
The study, led by Dr. Shelley H. Liu, an associate professor at the Icahn School of Medicine at Mount Sinai, utilized a cutting-edge analytical approach to scan umbilical cord blood samples from 120 babies born between 2003 and 2006 in Cincinnati, Ohio. Unlike traditional tests that focus on a limited number of known PFAS compounds, this method screened for thousands of substances simultaneously.
The results revealed the presence of 42 different types of PFAS in the cord blood, including many newer compounds that are poorly understood and rarely included in routine screenings. This suggests that prenatal exposure to these chemicals is far more complex and widespread than previously recognized.
“Our findings suggest that how we measure PFAS really matters,” Dr. Liu said in a news release. “When we look more comprehensively, we see that babies are exposed to far more PFAS chemicals before birth than we previously realized — and some of the patterns we thought we understood may change.”
This discovery is particularly concerning because pregnancy represents a critical window for development. Previous research has linked PFAS exposure to a range of adverse health outcomes, including lower birth weights, preterm births, and weakened immune responses to childhood vaccines. The long-term effects of early-life PFAS exposure are still being investigated, but scientists are increasingly concerned about potential impacts on growth, neurodevelopment, and immune function.
The study highlights the need for a more comprehensive understanding of the PFAS chemical landscape and its impact on infant health. By identifying the full extent of prenatal exposure, researchers hope to better understand how these chemicals affect children as they grow, and develop.
“Our study helps show that prenatal PFAS exposure is more complex and widespread than earlier studies suggested,” Dr. Liu explained. “Understanding the full picture is essential if we want to protect child health and reduce preventable environmental risks.”
Currently, doctors do not routinely test for PFAS during pregnancy. However, this research could pave the way for broader clinical testing and the identification of populations at higher risk of exposure. A more comprehensive assessment of PFAS levels during pregnancy could also inform strategies to reduce exposure and mitigate potential health risks.
The researchers identified exposure to perfluorinated chemicals, polyfluorinated chemicals, and fluorotelomers. The ability to detect a broader range of PFAS compounds is a significant advancement, as it allows for a more accurate assessment of the total chemical burden experienced by newborns.
The findings underscore the pervasive nature of PFAS in the environment and the challenges of reducing human exposure. These chemicals have been widely used in industrial and consumer products for decades, leading to widespread contamination of water, soil, and air. While efforts are underway to phase out the use of certain PFAS compounds, their persistence in the environment means that exposure will likely continue for years to come.
This research represents an important step forward in understanding the impact of PFAS on early life. Further studies are needed to investigate the specific health effects of the newly identified PFAS compounds and to develop effective strategies to reduce exposure and protect vulnerable populations. The study, initially released on , and reported on , emphasizes the importance of continued research and monitoring of these “forever chemicals” and their potential health consequences.