Sleep and Yoga Nidra: The Complementarity that May Prove Valuable in Chronic Ailments

Background Sleep is a fundamental biological process essential for neurological restoration, immune regulation, metabolic stability, emotional balance, and cardiovascular health. Chronic sleep disturbances have increasingly been associated with hypertension, diabetes mellitus, obesity, chronic pain syndromes, neurodegenerative disorders, anxiety, depression, and impaired immune function. In parallel, Yoga Nidra, commonly referred to as “yogic sleep,†has emerged as a structured meditative and relaxation-based intervention with measurable physiological and psychological effects. Objective This narrative review synthesizes current neurophysiological evidence, clinical studies, and integrative medicine perspectives evaluating the complementarity between physiological sleep and Yoga Nidra in the management of chronic ailments. The review aims to examine mechanistic pathways linking sleep restoration, autonomic regulation, stress modulation, and psychosomatic health, while assessing the therapeutic relevance of Yoga Nidra as a non-pharmacological adjunct to sleep-focused interventions. Methods and Discussion The article reviews emerging evidence on the neurophysiological mechanisms underlying sleep and Yoga Nidra, with particular emphasis on autonomic nervous system modulation, hypothalamic–pituitary–adrenal (HPA) axis regulation, parasympathetic activation, emotional regulation, and reduction of stress-related biomarkers including cortisol, high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α). Evidence from clinical and neurophysiological studies also suggests improvements in heart rate variability, sleep efficiency, slow-wave sleep, and psychological well-being following Yoga Nidra practice. The review further discusses the therapeutic relevance of these mechanisms in chronic conditions including hypertension, diabetes mellitus, chronic insomnia, chronic pain syndromes, cancer-related fatigue, anxiety disorders, and depression Conclusion Yoga Nidra does not replace physiological sleep; rather, it appears to augment restorative neurophysiological mechanisms associated with sleep and recovery. Integrative incorporation of Yoga Nidra into sleep-focused therapeutic protocols may represent a cost-effective, safe, and non-pharmacological adjunct within allied health and integrative healthcare systems for improving chronic disease outcomes and overall well-being.