Ayurveda definition and function of Rasa Dhatu or lymph

Rasa dhatu is formed when agni digests food. When food is completely digested with the help of normally secreted digestive juices, the nutritive part of the digested food is called as rasa. This nutritive juice nourishes all cells and tissues of body. It is analogous to extra cellular and intracellular fluids.

Importance of rasa:

"Rasajam purusham vidyaat rasam rakshet prayatnatah
annath paanathcha mathimaan aahaaraatch apyathandritah"


Rasa dhatu contains all the nutients required to nourish body. Hence ayurveda achaaryas mention human body as product of rasa. As rasa dhatu nourishes body and helps to keep it healthy, we should always put efforts to protect rasa dhatu. This can be done by consuming healthy food, plenty of liquid like water , milk etc and practicing healthy lifestyle. Indigestion impairs quality of rasadhatu.

What happens when rasadhatu decreases? or rasa dhatu kshaya

"Rase roukshyam shramassoshoglani shabdaasahishnutha"

When rasa dhatu decreases the following symptoms appear.

Dry skin ( twak rukshata)
tiredness (shrama)
Dehydration ( Shosha)
Malaise (glani)
Intolerance to sound (shabdaasahishnuta)

What happens when rasa dhatu increases?

"Rasopi sleshmavat sleshmaagni sadana praseka
aalasygouravam shwaitya shaitya sladhangatvam shwaasa kaasaati nidrata"

When rasa dhatu increases the following symptoms appear

Indigestion (agnimandya)
Excess salivation (praseka)
Lethargy (Aalasya)
Pallor (shweta varna)
Weakness (shaithilya)
Gasping for breath (shwasa)
Cough (kaasa)
Increased sleep (atinidrata)

Symptoms of improperly formed rasa dhatu

Inactiveness
Loss of appetite
Nausea
Heaviness of body
Increased salivation
Feeling of tiredness
Fever
Body pain
Inability to perform sex or temporary erectile dysfunction
Emaciation
Premature hair loss and premature graying