Fish are a healthy component of many diets, but depending where fish spend their time, they can pick up contaminants like mercury or polychlorinated bipheyls (PCBs) in their bodies. These chemicals are introduced to the environment from industrial and historical uses and enter the food chain, accumulating in seafood, marine mammals and humans. We talked with Mai Hoang, a Vietnamese-speaking Community Health Advocate who is working with Public Health – Seattle and King County.  She shared with us what drives her work as well as some of the challenges she encounters in sharing this information with her community.