Ayurveda describes many agnis, but the central one, jatharagni, governs digestion in the stomach and gut. When agni is balanced, food is digested well and the body is nourished; when it is weak or irregular, digestion is incomplete.
Weak agni is seen as a root of many imbalances, including those grouped under Prameha. This is why regular meal times, warm freshly cooked food and not eating before the previous meal is digested are recurring Ayurvedic advice.
