Digestion is the most important part of the body .Digestion is the process which provides the nutrition to the body and mind on other hand this system is also responsible for the removal of waste products from the body through anal route.  Health is mainly dependant on the activities of this system, if this system is working well, only then- one can think about health. Otherwise health is just a dream. The food when fully digested by the digestive power acts like a nectar. When it remains undigested; it acts like a poison. The undigested product is not absorbed easily and remains there stagnated producing an acidic medium. This causes food to act like a poison.

The Body is an entity which is wasted due to wear and tear. This means the constant use of the physical body leads to slow destruction and that is why it is called ‘Sharir’ in Sanskrit which means: that which is constantly in a state of emaciation. This body therefore needs constant renovation or restoration. This repair or recovery of energy is made from the nutrition available from the food. To make all the food material assimilable and to absorb all the nutrients from it, the food has to be broken down into absorbable fractions by treating with various enzymes. The food goes through several processes of treatment for the same. This entire process is known as digestion.

The food material is first broken down and converted into an assimilable form called ‘Ahara Rasa’ or the first product of digestion. This Ahara Rasa is then absorbed in the body and all the Dosha, Dhatu, Mala are renewed from it. This process of digestion of food material until its conversion to Ahara Rasa can easily be comprehended and studied and hence is known as digestion at macro levels, or gross digestion. On the other hand, the production of Dosha, Dhatu and Mala from the Ahara Rasa takes place at micro levels and can only be inferred from logical references. This step of digestion is hence known as digestion at micro levels (Suksham Pachan). So the digestion process takes place in two steps i.e.

  • Digestion at Macro level: conversion of food in Ahara Rasa by the action of Jatharagni on it.
  • Digestion at micro level: Formation of Doshas, Dhatus and Malas from the Ahara Rasa by the action of Bhutagnies and Dhatwagnies on it

On consumption of healthy food and drinks is digested with the help of ‘Jatharagni’. It is further transformed with time with continues and regular processing into different bodily elements. The body in perfect normal or healthy states is nourished and is replenished with factors like healthy, strength, healthy, complexion, happiness and longevity of life. According to Ayurveda if a single component does not function properly like body is thereby not nourished properly.

As a result of the process of digestion and the action of Agni on the food material, it is converted into nutritive and excretory material. The nutritive material is assimilable in the body and provides nutrition to it and hence is known as ‘sara’ while the excretory material is a waste bi-product and hence is known as ‘kitta’. During the process of digestion, just like the nutritive part, a harmful waste product ‘kitta’ is also formed which is excreted at the appropriate time.

The nutritive part helps in the nourishment of all the tissues like rasa, Rakta, mansa, meda, asthi, majja, Shukra and oja, the elements like indriya drarya which are the essence of the Dhatus and all the joints in the body etc. The mala or the excretory part also replenishes its own counterparts like sweda, mutra, Purisha, vata, pitta, kapha, karnamala, akshimala, nasikamala, asyamala, prajananamala, kasha, shmashru, loma, nakha and other excretory wastes.