A call to rethink health in a circular, interconnected world. The COVID-19 pandemic exposed humanity's fragility and the need for a holistic approach to health. Ilaria Capua's Circular Health challenges readers to abandon obsolete specializations and embrace interdisciplinary thinking to resolve global crises. This thought-provoking work examines health within a circular system encompassing humans and the environment. Through compelling stories, Capua highlights the interconnectedness of human, animal, and environmental health, advocating for responsible stewardship of the planet. She urges a shift towards data-driven, sustainable solutions, empowering readers to become guardians of planetary health in the face of emerging challenges. For professionals, scholars, and anyone seeking a broader understanding of health in the 21st century, Circular Health offers a transformative vision for a healthier, more sustainable future.