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A weekly podcast and newsletter, The Catalyst is Chestnut Health Systems’ platform for sharing ideas, insights, and innovation that advance public health and strengthen systems of care. Rooted in Chestnut’s decades-long commitment to direct care, prevention, research, and education, The Catalyst highlights real-world solutions that support whole-person health, foster resilience, and help individuals, families, and communities reach their full potential. It reflects the full scope of Chestnut’s work—from direct care and community‑based services to research, prevention, recovery, and policy‑relevant insight. -Chestnut Health Systems™ is a nonprofit organization dedicated to improving public health through a comprehensive approach that includes direct service delivery, prevention, research, training, and system improvement. For decades, Chestnut has worked to bridge the gap between knowledge and practice—helping individuals thrive, strengthening organizations, and supporting healthier communities.The Chestnut corporate office is in central Illinois, with clinical locations in Belleville, Bloomington, Granite City, and Maryville, IL and De Soto and Hillsboro, MO; prevention and recovery services are offered in dozens of counties in Illinois; and Lighthouse Institute research offices are located in Chicago and Bloomington, IL, Euguene, OR, and remote researchers across the United States.