A recent peer-reviewed study has found that levels of toxic per- and polyfluoroalkyl substances (PFAS) in northern gannet eggs from Bonaventure Island, Canada, have significantly decreased, demonstrating the effectiveness of environmental regulations. Specifically, PFOS levels dropped from a peak of 100 parts per billion (ppb) in the late 1990s to 26 ppb by 2024, marking a 74% decline. This reduction aligns with regulatory actions taken by the US Environmental Protection Agency and other international bodies to phase out harmful PFAS compounds. The study highlights a 40% decrease in PFOA levels and a 72% drop in PFHxS levels. Despite these positive trends, researchers caution that newer PFAS compounds, which are more difficult to measure and also pose risks, have likely increased in the environment. The persistence of older PFAS compounds means that contamination will continue to affect wildlife and ecosystems for years to come, underscoring the importance of sustained regulatory efforts and scientific monitoring.