The root derivation of dhatu is "do - dharana poshanayoh".
The dhatus help in the maintenance, hearing, sustenance and nourishment of the human body.
There are seven dhatus, they are:
Rasa Dhatu: The digested food immediately after absorption is called rasadhatu. Its function is prinana - to nourish and supply nutrients to other tissues. If rasa dhatu is increased, loss of appetite, drowsiness, laziness, and heaviness occur. If it is decreased, the body becomes rough, one feels tired and loss of body weight and irritability occur.
