Pitta Dosha and Human Thermoregulation: A Critical Synthesis of Ayurvedic Physiology and Modern Evidence

Abstract

In Ayurvedic physiology, Pitta stands as the principal force governing transformation, metabolic activity, and the generation of bodily heat. Classical descriptions repeatedly link its balanced state to stable internal temperature and its disturbance to intolerance to heat, excessive perspiration, and a subjective sense of burning. Contemporary physiology, by contrast, accounts for temperature regulation through hypothalamic control, adjustments in metabolic output, changes in skin blood flow, and evaporative cooling. Although the two systems appear to describe overlapping phenomena, few attempts have been made to place classical Pitta attributes side by side with measurable thermoregulatory variables. The present narrative review gathers material from the major Samhitas and their commentaries and from modern databases in order to examine this interface. Classical statements concerning Ushna, Tikshna, and Bhrajaka Pitta are set against data on core and skin temperature, resting metabolic rate, sweat characteristics, infrared imaging, and responses to heat stress. Available observations, though still limited in scale, point toward higher baseline temperatures, more abundant sweating, and lower heat tolerance among individuals of Pitta-dominant constitution. Continuous temperature recording and thermal imaging offer practical means of testing these associations further. Important gaps remain, especially the absence of adequately controlled experimental work. Closer dialogue between the two traditions can strengthen the empirical base of Kriya Sharir and open useful avenues for individualized approaches to thermal comfort and heat-related risk.