doSAs are the FUNCTIONAL ELEMENTS of the body. These are three – VATA,PITTA and KAPHA. They represent the universal elements wind, sun, and moon respectively. They also have the similar properties of sun, moon and wind. When they are in balanced or normal state, they keep the person HEALTHY but when they become imbalanced or impure, they give rise to different DISEASES. These doSAs cannot be seen in the body. We can see them only when they become impure and get eliminated from the body.

doSAs are the combination of five basic ELEMENTS namely AkAza (ether), vAyu (air), agni (fire), jala (water) and pRthvi (earth).

- vAta is a combination of AkAza plus vAyu
- pitta is a combination of agni plus jala
- kapha is a combination of pRthvi plus jala

The nature of vAta is MOVEMENT, pitta is HEAT and kapha is HEAVY.