Agni therefore covers a whole sequences of chemical interactions and changes in the body and mind.The biological fire that governs metabolism, agni encompasses all the changes in the body and mind including the digestion and absorption of food, cellular
transformations, assimilation of sensory perceptions and mental and emotional experiences.
Agni therefore covers whole sequences of chemical interactions and changes in the body and mind. Digestive abilities being related to the strength of agni.
Agni is present in every tissue and cell and is necessary to maintain the nutrition and auto-immune mechanism.
A balanced agni therefore is vital for health and the disturbances of Agni are usually the chief causes of diseases. The strength of the
body to resist disease and also its physical strength are directly related to its heat energy determining the metabolic processes of the body.
Agni and pitta are closely connected. While both are hot and light,agni is subtle and dry. The heat energy to help digestion contained by pitta is agni. Pitta is therefore the container and agni the content. Agni is acidic in nature and stimulates digestion.

Ayurveda identifies thirteen types of Agni in the body. The most important of them is the Jatharagni. the gastric fire, responsible for digestion of food eaten by correlating hydrochloric acid in the stomach and the digestive enzymes and juices secreted into the stomach, duodenum and the small intestines. If digestive agni is low and the capacity is impaired, one may experience pain, discomfort, feeling of heaviness or gases gurgling, constipation or loose stools.
Other types of Agni consist of SaptaDhatvagni and PanchaBhutagni which maintain the metabolic functions at tissue and cellular level.