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=== धात्वाग्नयः॥ Dhatwagni ===

=== धात्वाग्नयः॥ Dhatwagni ===

सप्तभिर्देहधातारो धातवो द्विविधं पुनः|

There are 7 dhatus with which the entire body is build up. All these dhatus derive their nutrition from the rasa dhatu formed at the end of digestion. Rasa Dhatu then undergoes further transformation at the level of each dhatu in order to provide the specific nutritional requirements of that dhatu and discard the unwanted or inadmissible portion called as dhatumalas (धातुमलाः) or [[malas (मलाः)]]. At the same time, various [[upadhatus (उपधातवः)]] are also developed and nourished. Therefore dhatwagnis control the metabolic process at the dhatu level. It is also called as Sukshma-pachanam (सूक्ष्म पचनम्). <blockquote>सप्तभिर्देहधातारो धातवो द्विविधं पुनः| यथास्वमग्निभिः पाकं यान्ति किट्टप्रसादवत् ॥ (Char. Samh. 15.15)<ref>Charaka Samhita (Chikitsasthanam Adhyaya 15 Sutra 15)</ref></blockquote>

 

यथास्वमग्निभिः पाकं यान्ति किट्टप्रसादवत् [१] ||१५|| Cha Chi 15.15

==== धात्वाग्निभेदाः॥ 7 Types of dhatvagnis ====

==== धात्वाग्निभेदाः॥ 7 Types of dhatvagnis ====

== ॥ Relation between all agni types ==

== ॥ Relation between all agni types ==

अन्नस्य पक्ता सर्वेषां पक्तॄणामधिको मतः|

In all the types of agni mentioned above the one which digests ahara (food) i.e. Jatharagni is believed to be the chief. Maintenance of strength or status of all the other types of agni is dependent upon the jatharagni. If jatharagni is strong and stable sp would be the other types of agni and vice versa. Thus acharyas emphasize on keenly take care of jatharagni by offering it only the vidhivat ahara  (see : [[Healthy food habits (आहारविधिः)|Healthy food habits]]) because the status of ayu (life) and balam (strength and immunity) is rooted in this agni. <blockquote>अन्नस्य पक्ता सर्वेषां पक्तॄणामधिको मतः| तन्मूलास्ते हि तद्वृद्धिक्षयवृद्धिक्षयात्मकाः||७१||

तन्मूलास्ते हि तद्वृद्धिक्षयवृद्धिक्षयात्मकाः||७१||

तस्मात्तं विधिवद्युक्तैरन्नपानेन्धनैर्हितैः| पालयेत्प्रयतस्तस्य स्थितौ ह्यायुर्बलस्थितिः||७२|| (Asht. Hrud. 3.71-72)<ref>Ashtanga Hrudayam (Sharirasthanam Adhyaya 3 Sutra 71-72)</ref></blockquote>

== देहे अग्निकार्याणि॥ Role of agni in human physiology according to ayurveda ==

 

 

== ॥R ole of agni in human physiology according to ayurveda ==

Agni is an integral part of human body mechanics. In order to survive in the nature every individual has to establish a relationship with the nature. Through this relationship one's internal and external environment maintain a harmony and [[Purusha (पुरुषः)|purusha]] can survive and grow in the loka (external world/nature) as a part of it. However, this can be achieved only when one can take up the substances from outer world and convert them in a form suitable for acceptance by the body tissues so that it can be made use of to grow and repair the internal bodily environment. At the same time, the wastes generated through this process which are not compatible for body are separated by the agni and thrown out of the body. Thus agni plays the vital role of establishing and maintaining this crucial link between the man and the world. This function happens at multiple levels and thus the agni plays key role in maintenance of health and well-being. These various aspects of health controlled that are under the control of agni are listed by all the Ayurveda acharyas and thus they call agni the root of not just body but life.  

Agni is an integral part of human body mechanics. In order to survive in the nature every individual has to establish a relationship with the nature. Through this relationship one's internal and external environment maintain a harmony and [[Purusha (पुरुषः)|purusha]] can survive and grow in the loka (external world/nature) as a part of it. However, this can be achieved only when one can take up the substances from outer world and convert them in a form suitable for acceptance by the body tissues so that it can be made use of to grow and repair the internal bodily environment. At the same time, the wastes generated through this process which are not compatible for body are separated by the agni and thrown out of the body. Thus agni plays the vital role of establishing and maintaining this crucial link between the man and the world. This function happens at multiple levels and thus the agni plays key role in maintenance of health and well-being. These various aspects of health controlled that are under the control of agni are listed by all the Ayurveda acharyas and thus they call agni the root of not just body but life.  

Meaning: Agni is the prime agent in reducing aama, stiffness, cold, pains and aches etc. </blockquote>

Meaning: Agni is the prime agent in reducing aama, stiffness, cold, pains and aches etc. </blockquote>

== ॥ Role of sneha in agni strength ==

== स्नेहस्य अग्निवृद्धिकरत्वम्॥ Role of sneha in agni strength ==

अधुना स्नेहस्याग्निवृद्धिकरत्वं दृष्टान्तेन दर्शयति----

Effect of sneha (unctous substances / certain fatty substances) on the agni is well-known to everyone. We know that when we add oil or ghee like substances which are snigdha (unctuous in property) onto the burning fire  the flame immediately increases. Ayurveda acharya have explained that the same is applicable to the agni inside the body. As strong firewood greased with oil or any unctuous substance on coming in contact with the agni increases or becomes strong, food that has some unctuousness substance in it ignites the agni inside the body. Thus it is always recommended to food topped with ghee in Bharateeya Samskrti and Ayurveda. <blockquote>दीप्तो यथैव स्थाणुश्च बाह्योऽग्निः सारदारुभिः| सस्नेहैर्जायते तद्वदाहारैः कोष्ठगोऽनलः||७९|| (Asht. Hrud. Adhyaya Sutra )<ref>Ashtanga Hrudayam (Chikitsasthanam Adhyaya Sutra 79 )</ref></blockquote>

 

दीप्तो यथैव स्थाणुश्च बाह्योऽग्निः सारदारुभिः|

 

सस्नेहैर्जायते तद्वदाहारैः कोष्ठगोऽनलः||७९|| A.H.chi 79

== ॥ Role of quantity of food in agni strength ==

== ॥ Role of quantity of food in agni strength ==