Consideration of structural and functional entities of modern biology under the Ayurvedic concept of Dhatu

Abstract BACKGROUND: Ayurveda describes the Sapta Dhatu as fundamental structural and functional units sustaining the human body. Classical texts define Dhatu through Panchamahabhuta composition, Guna (attributes), Karma (functions), and sequential nourishment ( Dhatu Poshana ), whereas modern biology characterizes tissues by cellular architecture, biochemical properties, and measurable physiological roles. Bridging these epistemologically distinct frameworks poses challenges but also offers opportunities for integrative understanding. OBJECTIVE: To present a systematic framework for incorporating modern biological tissues and functions/elements under Dhatus , with correlations grounded in quantifiable markers rather than simplistic equivalence. MATERIALS AND METHODS: The methodology integrates classical descriptors- Nirukti (etymology), Panchabhautik composition, Guna, Moolsthana, Karma , and pathological markers ( Kshaya, Vriddhi, Dushti )-with biomedical correlates such as extracellular fluids, erythropoiesis, myofibrillar proteins, adipose metabolism, bone mineralization, marrow niches, and reproductive endocrinology. Each Dhatu is examined for its structural and functional parallels, with correlations grounded in quantifiable histological, physiological, and biochemical markers rather than simplistic equivalence. RESULTS: The correlations developed through this framework are further validated using the Ayurvedic principle of sequential Dhatu Poshana and the parallel generation of Upadhatus , demonstrating alignment between classical descriptions and modern biological functions. By presenting Dhatus as experiential yet testable constructs, the framework enables the identification of measurable biomarkers, supports translational research, and strengthens clinical and educational models. CONCLUSION: Rather than equating Ayurveda and modern biology, the proposed correlations emphasize plurality and complementarity, underscoring the potential of Dhatu theory to enrich contemporary biomedical discourse and integrative health sciences by situating Dhatus as experiential yet testable constructs.