Autophagy trilogy, Part C dives into the mature landscape of cellular housekeeping, weaving together the mechanistic precision of modern biology with the larger questions of health, aging, and resilience. Building on the foundations laid in Parts A and B, this book takes the reader from the microscopic machinery inside a single cell to the sweeping implications for organisms, ecosystems, and medicine. Macroautophagy, microautophagy, and chaperone-mediated autophagy Mitophagy, ER-phagy, pexophagy, aggrephagy, xenophagy, proteaphagy Roles in development, immunity, and stem cell maintenance