The Sushruta Samhita, a foundational text of ancient Indian medicine, was composed over two millennia ago by the sage Sushruta. Its second section, Nidana-sthana, delves into the origins of disease. “Nidana” means cause, and “sthana” means chapter, framing this section as a careful study of how illness begins. Sushruta explains that ailments arise from imbalanced bodily humors, unhealthy habits, and shifting environmental forces. By mapping these roots, he creates a clear roadmap for diagnosis and prevention. Written in graceful Sanskrit, the text bridges ancient wisdom and timeless medical insight. Its steady focus on understanding cause over cure continues to guide practitioners, reminding us that healing truly begins with knowing where disease starts.