Sushruta, a great surgeon and teacher of Ayurveda defined health as “a state of equilibrium of Tridosha (fundamental physiological governing principles of the body), Agni (metabolic and digestive processes) and Dhatu (principles that uphold the formation of body tissues).
Basic doctrine principles of Ayurveda
Ayurveda believes that the entire universe is composed of five elements: Vayu (Air), Jala (Water), Aakash (Space or ether), Prithvi (Earth) and Teja (Fire). These five elements (referred to as Pancha Mahabhoota in Ayurveda) are believed to form the three basic humors of human body in varying combinations.
The three humors; Vata dosha, Pitta dosha and Kapha dosha are collectively called as “Tridoshas” and they control the basic physiological functions of the body along with five sub-doshas for each of the principal doshas.
Ayurveda believes that the human body consists of Saptadhatus (seven tissues) Rasa (tissue fluids), Meda (fat and connective tissue), Rakta (blood), Asthi (bones), Majja (marrow), Mamsa (muscle), and Shukra (semen) and three Malas (waste products) of the body, viz. Purisha (faeces), Mutra (urine) and Sweda (sweat). Any imbalance between the three causes a state of illness or disease.
The body is believed to be composed of seven types of tissues called as “Sapta Dhatus”. These seven tissues work in coordination with each for proper physiological functioning of the human body. The Rakta Dhatu resembles the blood and regulates the circulation of blood cells and provision of blood components to the body. The Mamsa Dhatu (Muscle tissue) provides supports in the form of skeletal muscles for the Meda Dhatu (adipose fat). The Asthi Dhatu comprises the bones of the body and the Majja Dhatu is made up of the bone marrow and fluids required for the oleation of the bones and their functioning. The Shukra Dhatu is responsible for functions of the reproductive organs of the body.
Apart from the Doshas and the Dhatus, the other important factors considered in the doctrine of Ayurveda are the Tri Malas and Trayo Dosa Agni.
Tri Malas are the three types of waste products formed in the body due to metabolic and digestive functions of the body. They comprise of the Mutra (urine), Purisa (faeces), and Sveda (sweat).
As per the principles of Ayurveda the biological fire of the body for all the metabolic function is called as “Agni”. There are thirteen categories of Agni in a human body and the most important is the one responsible for digestive fire, called as Jatharagni. Jatharagni has a close relation with Pitta and ultimately Vatta of the body