Rasa Dhatu (रस धातु)

The Samskrit word 'Rasa' has various meanings like extract/juice, taste, interest and even mercury. However in context of human body the word 'Rasa' used in Ayurveda refers to a body tissue or body component which is the first among 7 dhatus described in Ayurveda. Dhatus are building blocks of physical body called as Sharira. It is also called as 'Ahara-rasa' i.e. extract of food in liquid state. It performs the function of nourishing the physical body.

Formation of rasa dhatu

Rasa dhatu is formed from food. We consume various type of foods which are either chewed, swallowed, drank or licked. Food in any such form is digested by Agni in the stomach. Agni performs the function of digestion of this food and its transformation into a form that is acceptable by the body. To make this food bio-available foe all the body tissues a uniform microfine extract of this food is formed by Agni. This food extract which ultimately reaches body tissues, provides nourishment to them is called as Rasa dhatu according to Ayurveda.

Panchabhoutik constitution

Rasa dhatu is formed from Food and is in liquid form. Thus Prthvi (earth) and Jala (water) element are dominant in Rasa dhatu.

Location of Rasa dhatu

Function

Upadhatu of Rasa dhatu and their function

Associated Dosha

Associated Srotas

Vitiating factors

Importance of Rasa dhatu in health and wellbeing