S3 EP02 | What PFAS Can Do to Your Body: What PFAS Can Do to Your Health (Especially for Kids & Teens)

In this episode, we explore how PFAS may affect one of the body's most important communication systems: hormones. Hormones act as chemical messengers, helping regulate growth, sleep, energy, metabolism, puberty, and many other essential functions. Scientists are studying PFAS because some of these chemicals may interfere with how hormone signals are sent, received, or processed. Rather than damaging the system directly, PFAS may disrupt the body's natural communication, making hormone research one of the fastest-growing areas of PFAS science. We take a closer look at the thyroid, a small gland with a major role in regulating energy, body temperature, heart rate, and brain development. Research has found links between PFAS exposure and changes in thyroid hormone levels, although scientists are still working to understand exactly how these chemicals influence the endocrine system. We also discuss puberty, a complex process guided by many hormones working together. While some studies suggest PFAS may be associated with changes in the timing of development, researchers continue to investigate these findings to better understand the long-term effects. This episode emphasizes the importance of curiosity over fear. Current research does not suggest that most people exposed to PFAS will develop obvious hormone disorders. Instead, scientists are examining whether long-term exposure across large populations may subtly influence hormone systems over time. By understanding how hormones work and why they matter, we gain a clearer picture of why PFAS research continues to evolve and why studying these chemicals remains important for protecting future generations. In the next episode, we move beyond the science and hear the stories of communities living with PFAS-contaminated drinking water, exploring the real-world impact behind the research.