Changes

==Formation and metabolism ==

==Formation and metabolism ==

Meda dhatu is formed from the unctuous portion of mamsa dhatu by action of factors responsible for metabolism of meda(medadhatvagni). [Cha. Sa ChikitsaSthana 15/29-30]

Meda dhatu is formed from the unctuous portion of [[mamsa dhatu]] by action of factors responsible for metabolism of meda(medadhatvagni).[Cha. Sa [[Chikitsa Sthana]] 15/29-30]

 

There are two forms of meda dhatu in body:

There are two forms of meda dhatu in body:

1. Structural component (poshyameda dhatu): It is the form,that is stored in thelayer of meda(medodhara kala). It is also called fixed or stored fat (baddhamedas). This portion is located mainly in the omentum.This form is responsible for nutrition of meda dhatu itself in case of starvation.  

 

2. Circulating component (poshakameda dhatu): This form is circulated with nutrient fluid or plasma (rasa dhatu) and blood(rakta).  It is free and unbound (abaddhameda). This provides lubrication and unctuousness wherever needed. This form is vitiated in the pathogenesis of obstinate urinary disorders including diabetes (prameha) [Cha.Sa.NidanaSthana 4/7]

1. Structural component (poshyameda dhatu): It is the form,that is stored in the layer of meda(medodhara kala). It is also called fixed or stored fat(baddhamedas). This portion is located mainly in the omentum.This form is responsible for the nutrition of meda dhatu itself in case of starvation.  

Metabolic byproducts and waste products (Upadhatu and mala):  

 

During the process of metabolism and formation of meda dhatu, ligaments (snayu) are formed as the metabolic byproducts (upadhatu). [Cha. Sa. ChikitsaSthana 15/17].  Sweat and sebum is formed during this process as waste products (mala). [Cha.Sa. ChikitsaSthana 15/18].

2. Circulating component (poshakameda dhatu): This form is circulated with nutrient fluid or plasma ([[rasa dhatu]]) and blood([[rakta]]).  It is free and unbound (abaddhamedas). This provides lubrication and unctuousness wherever needed. This form is vitiated in the pathogenesis of obstinate urinary disorders including diabetes (prameha) [Cha.Sa.[[Nidana Sthana]] 4/7]

Quantity:  

 

The total quantity of medadhatu is two anjali (personified measurement unit). The quantity of vasa is three anjali (personified measurement unit). One Anjali is equal to the quantity that can be filled in a space formed from joining one’s palms together. [Cha. Sa. ShariraSthana 7/15]

'''Metabolic by-products and waste products (Upadhatu and mala):'''

Time span:  

 

The meda dhatu is formed on 4th day from nutrient fluid (ahara rasa). [Cha.Sa. ChikitsaSthana 15/20-21] However, Sushruta opines that the meda dhatu is formed in fifteen days (a time span of 9045 kala). [Su. Sa. Sutra Sthana 14/14]  

During the process of metabolism and formation of meda dhatu, ligaments (snayu) are formed as the metabolic byproducts (upadhatu). [Cha. Sa. [[Chikitsa Sthana]] 15/17].  Sweat and sebum are formed during this process as waste products (mala). [Cha.Sa. [[Chikitsa Sthana]] 15/18].

Characteristics of best quality of adipose tissue (medasara ):  

 

The person endowed with best quality of meda dhatu have significant unctuousness specifically in complexion, voice, eyes, hair, skin hair, nails, teeth, lips, urine and feces. This indicates wealth, power, happiness, enjoyment, charity, simplicity and delicacy in dealings.[Cha.Sa.VimanaSthana 8/106]

'''Quantity:'''

 

The total quantity of medadhatu is two anjali (personified measurement unit). The quantity of vasa is three anjali (personified measurement unit). One Anjali is equal to the quantity that can be filled in a space formed from joining one’s palms together. [Cha. Sa. [[Sharira Sthana]] 7/15]

 

'''Time span:'''

 

The meda dhatu is formed on the 4th day from the nutrient fluid (ahara rasa). [Cha.Sa. [[Chikitsa Sthana]] 15/20-21] However, Sushruta opines that the meda dhatu is formed in fifteen days (a time span of 9045 kala). [Su. Sa. Sutra Sthana 14/14]  

 

'''Characteristics of best quality of adipose tissue (medasara ):'''

 

The person endowed with best quality of meda dhatu has significant unctuousness specifically in complexion, voice, eyes, hair, skin hair, nails, teeth, lips, urine and feces. This indicates wealth, power, happiness, enjoyment, charity, simplicity and delicacy in dealings.[Cha.Sa.[[Vimana Sthana]] 8/106]

 

==Physiological aspects: ==  

==Physiological aspects: ==  

Channels of transportation and transformation of meda dhatu (medovahasrotas):

Channels of transportation and transformation of meda dhatu (medovahasrotas):