Ayurvedic Perspective on Nidra: Classification, Function and Health Implications

Background: Nidra (sleep) is regarded in Ayurveda as one of the three essential pillars of life (Trayopastambha), along with Ahara (diet) and Brahmacharya (balanced conduct). It plays a vital role in maintaining physical health, mental stability, and emotional balance. According to Ayurvedic principles, Nidra is not merely the absence of wakefulness but a natural, restorative state governed by the body's internal rhythms and the predominance of Kapha Dosha. Proper sleep supports tissue nourishment, cognitive function, immunity and longevity. Objective: To explore the Ayurvedic concept of Nidra (sleep), including its classification, physiological functions, and implications on health, and to evaluate its relevance in the context of modern sleep science. Methodology: A descriptive and interpretive approach was employed, synthesizing classical Ayurvedic texts such as Charaka Samhita and Sushruta Samhita with contemporary physiological. It also includes a review of modern biomedical literature to identify correlations between traditional Ayurvedic views on sleep and contemporary scientific understanding. Ayurvedic principles of Tridosha (Vata, Pitta, Kapha) and their impact on Nidra are analyzed in relation to sleep disorders. Results and Discussion: From the Ayurvedic viewpoint, Nidra (sleep) is a fundamental biological process essential for maintaining the balance of the three Dosha—Vata, Pitta, and Kapha—and ensuring overall physical, mental, and spiritual well-being. Conclusion: Ayurveda presents integrative understanding of Nidra, highlighting its central role in sustaining physical, mental, and emotional health. Its classifications and treatment principles offer promising complementary insights into managing modern sleep disorders. Integration of Ayurvedic principles with evidence-based practices could enhance holistic approaches to sleep health and disease prevention.