# dhātv-agni (धात्वग्नि)

> Canonical version of this page: https://nighantu.ageayurveda.com/lexicon/dhatu-agni/

An Ayurvedic technical term, rendered into English in 6 different ways.
The renderings do not agree, and the difference between them changes what the term is taken
to mean.

## Identification

| Field | Value |
| --- | --- |
| Transliteration | dhātv-agni |
| Devanagari | धात्वग्नि |
| Also written | dhatvagni, dhātvāgni (spelling used in the NIA/WHO-APW list), rasāgni, raktāgni, māṃsāgni, medo-agni, asthyagni, majjāgni, śukrāgni (the seven members) |
| Category, as gathered | dhatu |
| Grouped under | Body: tissues, wastes and channels |
| Classical citations | 4 |
| Citations checked | 2026-10-08 |

## How it is translated, and whether the translation holds

Each rendering is given with the source that uses it. The assessment is ours.

### Metabolic factors located in structural components

WHO International Standard Terminologies on Ayurveda (2022) · ITA-2.6.6 · standard

WHO's description: 'Transformative factors at structural component level which governs the transformation of one fundamental structural component into another'. WHO also gives each of the seven separately at ITA-2.6.12 to ITA-2.6.18, e.g. ITA-2.6.13 'Metabolic factors located in blood'.

Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that
licence permits, and deliberately absent from the downloadable dataset, which is CC BY 4.0.

### Seven types of Agni those are responsible for transformation of one Dhatu into another

National Institute of Ayurveda, WHO-APW project 'Standardization of Non-Clinical Terminologies of Ayurveda' · entry SK0062, dhātvāgni · standard

COMPARATOR. This is the Indian drafting input to the WHO terminology project, not the WHO publication itself. The list it gives names only six (Rasagni, Raktagni, Mamsagni, Medo agni, Asthyagni, Sukragni) while calling them seven; majjāgni is missing. That is an error in the source, recorded as found.

Reproduced unaltered and attributed from the WHO International Standard Terminologies on Ayurveda, which is what that
licence permits, and deliberately absent from the downloadable dataset, which is CC BY 4.0.

### their seven respective fires

Charaka Samhita tr. Avinash Chandra Kaviratna (1896-1913) · Cikitsāsthāna 15, Kaviratna's v.14 · translation

Public domain. Kaviratna renders agni throughout as 'fire' or 'heat' and coins no compound.

### the native heat of the latter

Sushruta Samhita tr. Kaviraj Kunja Lal Bhishagratna (1907) · Sūtrasthāna ch. 14, translator's footnote · translation

Public domain, but this is Bhishagratna's own explanatory note, not a translation of mūla text.

### tissue fire / tissue-specific digestive fire / tissue metabolic fire

common BAMS textbook usage · textbook · our paraphrase of the source, not its words

Widespread in Kriya Sharira teaching; not traced to a specific edition here.

### tissue enzymes

20th-century correlation literature · other · our paraphrase of the source, not its words

Common but reductive; see mistranslations.

## The classical passages

### Charaka Samhita Cikitsāsthāna 15 (Grahaṇī-doṣa-cikitsā):Kaviratna's v.14, checked against the source

> They who sustain the body, viz., the 'dhatus' (i. e., 'Rasa' or juice, blood, flesh, adeps, marrow, bones, and vital seed), are cooked by their seven respective fires. This process of cooking which they undergo is of two kinds in consequence of the 'Kitta' (refuse) and the 'Prasada' (pure substance) which results from it.

tr. Avinash Chandra Kaviratna · https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

The seven dhātu-level fires and their two-fold product, prasāda and kiṭṭa. This is the core locus for the concept. Kaviratna's footnote here remarks on the awkwardness of moving from five bhūtāgnis to seven fires.

### Charaka Samhita Cikitsāsthāna 15:Kaviratna's vv.12-13, checked against the source

> Since the five heats, viz., that appertaining to earth, that to water, that to fire, that to air, and that to ether, digest earth and the other properties, respectively, numbering five, of the food eaten, Therefore, the material properties in the body (that is, those that relate to the five material substances already named) are nourished, respectively, by their correlative elements.

tr. Avinash Chandra Kaviratna · https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

The bhūtāgni layer immediately preceding the dhātvagni verse, which is why the two are so often conflated. The five elemental fires act on the five elemental properties of food; the seven tissue fires act on the dhātus.

### Charaka Samhita with Cakrapāṇidatta's Āyurvedadīpikā Sūtrasthāna 28 (Vividhāśitapītīya):commentary on v.3, Cakrapāṇi's segment 8, checked against the source

> kiṃvā yathāsvenoṣmaṇeti yasya rudhirāder ya ūṣmā dhātvagnirūpastena samyagvipacyamānamaśitādi rasatām āpannaṃ yadā raktādidhātūn pratipadyate tadā raktādyūṣmaṇaiva pacyate

tr. none (Sanskrit) · https://gretil.sub.uni-goettingen.de/gretil/corpustei/transformations/plaintext/sa_agniveza-carakasaMhitA-parts-comm.txt

Cakrapāṇi glosses the mūla phrase yathāsvenoṣmaṇā ('by its own respective heat') at Ca.Sū.28.3 as dhātvagni: food that has become rasa, on reaching rakta and the rest, is cooked by the heat of rakta and the rest. This is a second, independent classical anchor for the term, in Sūtrasthāna rather than Cikitsāsthāna.

### Charaka Samhita Cikitsāsthāna 15:Kaviratna's v.38, checked against the source

> That heat which cooks (digests) the food eaten is the prince of all heats whose function is cooking. Indeed, all the other heats have the food-cooking heat for their root. Their increase or decrease depends on its increase or decrease.

tr. Avinash Chandra Kaviratna · https://archive.org/stream/BIUSante_47357/BIUSante_47357_djvu.txt

Jāṭharāgni is primary and the dhātvagnis are dependent on it. This subordination is the textual basis for treating jāṭharāgni disorder as upstream of dhātvagni disorder.

## Where this term does work in the theory

One concept record names this term as one of its components, and glosses it there as follows.

- **[Dhatu Formation and the Three Models of Tissue Nutrition](https://nighantu.ageayurveda.com/concept/dhatu-formation/)** (as Dhatvagni): Seven tissue-level fires, one per dhatu, that 'cook' the incoming nutrient into that tissue. The seven-fold count is what Charaka Chikitsasthana 15.16 states, but how many such fires there are, and whether any fire exists in the body distinct from pitta, is disputed: Bhishagratna's Introduction has Sushruta holding pitta to be the only fire and Arunadatta holding that there are as many dhatvagnis as there are body constituents. See the contested entry on dhatvagni.

## Not to be confused with

- **jāṭharāgni.** The gastric/central digestive fire, one in number, acting on ingested food. Ca.Ci.15 makes it the root on which all other fires depend. Dhātvagni acts later and within tissue.
- **bhūtāgni.** Five elemental fires acting on the five elemental properties of food. WHO gives it a separate entry (ITA-2.6.7) and notes it acts at two levels, alongside jāṭharāgni during digestion and alongside dhātvagni during tissue-level metabolism. The five/seven mismatch is exactly what Kaviratna's footnote flags.
- **pācaka pitta.** The pitta subtype seated in the gastrointestinal tract. Agni and pitta overlap but are not identical categories; agni is a functional principle, pitta a doṣa subtype.
- **āma.** The product of impaired agni, not a kind of agni.
- **dhātu-poṣaṇa.** Dhātvagni is the agency; poṣaṇa is the process and outcome. The nyāyas concern routing of nutrient, not the fire.

## Renderings that do not hold

- tissue enzymes. Names a molecular class the texts do not have, and loses the doṣa-linked functional states (sama, tīkṣṇa, viṣama, manda) that WHO itself records at ITA-2.6.8 to ITA-2.6.11. Enzymes have no such states.
- metabolic rate. Agni's four states are qualitative and doṣa-linked, not a single scalar; and dhātvagni is tissue-specific in a way BMR is not.
- mitochondrial function. A popular modern correlation with no basis in the classical description and no empirical support in the retrieved literature.
- digestive fire. Correct for jāṭharāgni, wrong for dhātvagni, which acts after digestion is complete.

## Open questions

Recorded rather than resolved.

- Whether the standard list is six or seven fires. The NIA/WHO-APW entry SK0062 says 'seven' and then lists six, omitting majjāgni. WHO ISTA ITA-2.6.6 lists seven but writes five of them as -āgniḥ and two as -dhātvagniḥ, an inconsistency worth flagging.
- No peer-reviewed operational definition or biomarker of dhātvagni was found. Searches on EuropePMC for 'dhatvagni' returned 55 hits, none offering a measurable definition. This appears to be a real gap, not a search failure.
- Kaviratna's Cikitsāsthāna 15 verse numbers run one behind Chakrapani-based editions (his v.14 is the verse universally cited as Ci.15/15). The offset should be confirmed chapter-wide before publishing his numbers.

## Citation

Age Ayurveda Nighantu, "dhātv-agni", https://nighantu.ageayurveda.com/lexicon/dhatu-agni/, CC BY 4.0.
Whole lexicon: https://nighantu.ageayurveda.com/lexicon.json and https://nighantu.ageayurveda.com/lexicon.csv.

Educational reference only. A term entry explains what a word means and how it has been
translated. Nothing here is advice.