Our universe is consist of 5 elements, namely air, water, earth, fire and eather(sky). The inspiration of all the movements is air or Vaayu mahabhuta. But along with movements all the living things in universe change their forms, and for this transformation fire element or Agni Mahabhuta is mainly responsible. For e.g. the ripening of a fruit ,heat is necessary similarly for hatching of an egg also requires heat. So we note that transformation is mainly due to fire(Agni Tatwa).
Likewise in human body these transformations occur with the help of Pitta dosha, second principle of Tridosh sidhhanta. In human body, digestion, aging, anger, fear, etc all these physiological and emotional transformations controlled by pitta .
So in this article we will see details about Pitta dosha.