The Six Factors That Form a Human Being: Garbhavakranti and Shad Garbhakara Bhava in the Charaka Samhita

📖 25 min read · By Ayurveda Hub

Garbhavakranti: Charaka’s Two Chapters on How a Human Being Is Formed

Every great medical tradition eventually has to answer a question that is really more philosophical than clinical: what is a human being, and where does one come from? The Charaka Samhita — the foundational text of Ayurvedic internal medicine — meets that question head-on in its Sharira Sthana, the “section on the body,” which is the tradition’s home for anatomy, physiology and the philosophy of the person. And it devotes not one but two consecutive chapters to it, under the shared heading of Garbhavakranti — from garbha, the embryo or the forming life in the womb, and avakranti, a “descent” or coming-into-being.

The first of the pair is Khuddika Garbhavakranti Sharira — the lesser or minor chapter on the descent of the embryo (Charaka Samhita, Sharira Sthana, Chapter 3). Despite the modest name, it is anything but minor in ambition: it asks what actually produces a new human being, and it answers through a formal debate. The second is Mahati Garbhavakranti Sharira — the greater chapter on the development of the fetus (Sharira Sthana, Chapter 4) — which takes the forming garbha and describes what it is made of, in what order it unfolds, and how, astonishingly, it mirrors the whole cosmos. Together these two chapters are among the most quietly profound passages in all of classical Indian thought.

The Garbhavakranti chapters live in the Sharira Sthana of the Charaka Samhita — the tradition’s “section on the body,” where medicine shades into philosophy. Shown here as classical scholarship

One frame must be set firmly at the outset, because the subject invites misunderstanding. This is not a piece about how to conceive a child, how a pregnancy progresses medically, or anything you could act upon. It is a reading of how an ancient tradition reasoned about the formation of a person — its model, its debate, its vocabulary. The tradition had already explored the mechanics of conception elsewhere; if that is what you are curious about as classical history, our companion piece on garbhotpatti in the Bhavaprakasha covers that ground. Here the concern is different and, in its way, larger: not how conception happens, but what a human being is made of — the six factors that, in Charaka’s account, come together to form us.

The Debate of Atreya and Bharadwaja (Purvapaksha and Siddhanta)

Here is the first thing that should make a modern reader sit up. Charaka does not simply assert how the embryo is formed. He argues it — and he shows his working. The third chapter is written as a recorded seminar, a samvada (dialogue) between the questioner Bharadwaja and the teacher Lord Atreya Punarvasu. This is the classical Indian method of vada, structured debate: first the purvapaksha, the prior position or objection, is stated in its strongest form; then the siddhanta, the established conclusion, answers it. Truth is arrived at, not handed down.

Bharadwaja opens by playing the sharp sceptic. The proposal on the table is that the embryo arises from a set of factors — mother, father, the self, suitability, nutrition, and the mind. No, says Bharadwaja, and he presses a series of genuinely clever objections. If the parents simply produced the child, then everyone who longed for a son could have one at will, and no one would ever be childless — yet plainly that is not so. The self cannot produce itself, for a thing already in existence needs no producing, and a thing not yet in existence cannot act. Suitability cannot be the cause, or those who lived wholesomely would never be childless and those who did not always would be — again, not what we see. Nutrition cannot be it, for everyone eats, yet not everyone bears children. And the mind or psyche cannot simply descend from a former life carrying its cargo, for if it did, we would all remember our past lives, which we do not. Each objection has the same elegant shape: if factor X alone were the cause, we would expect Y — but we do not observe Y.

Two manuscripts, one lamp between them: the samvada of Bharadwaja and Atreya. Charaka does not merely assert how a human being is formed — he stages a debate, states the objections at full strength, and reasons to a conclusion. Shown here as classical scholarship

Lord Atreya’s reply is the hinge of the whole chapter, and it is beautifully simple. Bharadwaja is right that no single one of these factors, taken alone, can produce a human being. But he has drawn the wrong lesson. The answer is not that none of them matters; it is that all of them together do. “All these entities combined together give rise to the embryo,” Atreya says. The cause is the samudaya, the aggregate — the coming-together (samyoga) of the whole set. To drive it home he offers two homely images that have stayed with the tradition ever since: a roof-chamber is built from the aggregate of many materials, and a chariot is assembled from the combination of many parts. No single beam is the house; no single wheel is the chariot; and no single factor is the child. This is the doctrine of Shad Garbhakara Bhava, the six formative factors — and everything that follows is its unfolding.

Shad Garbhakara Bhava: The Six Factors, in Overview

So what are the six? The Shad Garbhakara Bhava — shad, six; garbhakara, embryo-making; bhava, factors or contributing elements — are the six streams that, in Charaka’s account, converge to form a complete human being. Each one contributes a recognisable class of the parts and qualities of a person. Laid out together, they read like this:

Notice at once how complete this list is meant to be. It reaches from the most tangible material of the body (bone and blood) through the physiological (growth, nourishment, vigour) all the way to the invisible and the moral (consciousness, memory, character) — and it names a distinct source for each register. A person, in this view, is not merely a body handed down by two parents. A person is a convergence: matter from the mother and father, life from the self, health from what agrees with us, substance from what nourishes us, and character from the mind. It is a strikingly rounded picture of the human being, and it refuses to reduce us to any single one of our parts.

Six distinct materials, one forming life at the centre. The Shad Garbhakara Bhava is Charaka’s answer to Bharadwaja: not one cause but an aggregate (samudaya) — like a house from many materials, a chariot from many parts. Shown here as classical scholarship

Charaka also adds an important qualification that keeps the scheme from becoming crude. Mother, father and self do not simply stamp their contributions onto the child at will. Their “instruments” are sometimes potent and sometimes not; some features arise by their action and others under the influence of past deeds; and where the instruments are excellent, the effect follows, and where they are not, it may not. In other words, the six factors describe a tendency and a structure, not a mechanical guarantee. It is a subtle, probabilistic way of speaking about inheritance and formation — and, again, a strikingly thoughtful one for its age. We will now take the six in turn, beginning with the two most tangible.

Matrija and Pitrija Bhava: What Mother and Father Contribute

The most concrete of the six factors are the matrija bhava and the pitrija bhava — the parts “born of the mother” and “born of the father.” Here Charaka does something memorable: he divides the material body between the two parents along a clean and teachable line. To the mother he assigns the soft constituents (mridu) — the yielding, fleshy, hollow parts. To the father he assigns the firm constituents (sthira) — the hard, stable, structural parts.

The matrija list, as the text gives it, is unmistakably the soft body: skin (twak), blood (rakta), flesh (mamsa), fat (medas), the navel, the heart (hridaya), the kloma, the liver (yakrit) and spleen (pliha), the kidneys (vrikka), the bladder, the stomach and the coils of the intestines, the colon and rectum, and the membranes — the omentum (vapa) and mesentery. It is, in effect, the roll-call of the soft viscera and the yielding tissues. The pitrija list is its firm counterpart: the head hair (kesha), beard and body hair (loma), the nails (nakha), the teeth (danta), the bones (asthi), the veins and channels (sira), the ligaments and tendons (snayu), and the reproductive essence (shukra). Soft from the mother; firm from the father. As a mnemonic, it is almost impossible to forget — which was surely the point.

A careful word is owed here, in the interest of honesty. This maternal-soft / paternal-firm division is a classical model — a way the old tradition organised and taught the make-up of the body. It is not how modern biology understands heredity, and it should not be read as a genetic claim. Modern inheritance does not parcel out “soft parts from the mother, hard parts from the father”; both parents contribute across the board. What is worth admiring in Charaka’s scheme is not its correspondence to modern genetics — there is little — but its intellectual shape: the drive to give a complete inventory of the body and to assign every part a considered origin. Read it as a two-thousand-year-old attempt to think systematically about what we are made of and where it comes from, and it is a small marvel. Read it as biology, and it simply is not that. We keep the admiration and leave the anatomy where it belongs, in the history of ideas.

Atmaja Bhava: The Self, and the Continuity of Life

If the matrija and pitrija factors give the body, the atmaja bhava — the contribution “born of the self” (atma) — gives the life. And this is where Charaka’s embryology opens directly into philosophy, into darshana. The self, the atma, is here identified with the jiva, the principle of life, described in soaring terms: beginningless and endless (anadi, ananta), free of illness, old age and death, not subject to being cut, burned or agitated, unmanifest, and without transformation. It is this that “descends” — the true sense of garbhavakranti — to combine with the parental contributions and become the living embryo.

The list of what the self contributes is, fittingly, everything that makes a lump of matter into a someone: birth into a particular species (jati) and a particular lifespan (ayu); self-knowledge and mind; the sense organs (indriya); respiration and the impulses of life; the individual’s characteristic form, voice and complexion; happiness and misery (sukha and duhkha); desire and aversion (iccha and dvesha); consciousness itself (chetana); and the whole inner apparatus of restraint, intellect (buddhi), memory (smriti), ego (ahankara) and effort. In short: the self contributes subjectivity — the fact that there is someone home. Without it, in Charaka’s telling, you would have material but no person; the seed of the parents is not a human being until the jiva makes it one.

The chapter even works through one of philosophy’s oldest puzzles — how something beginningless can be “born” — with real care. Its answer is that birth is not the creation of the self out of nothing, but only a transformation of age and condition. The self does not come into being; it enters a new configuration. Just as sperm, ovum and self do not constitute an embryo until they combine, and a man is not a father until a child is born, so the timeless self is spoken of as “born” only with respect to the new state it enters. It is a graceful piece of reasoning, and it shows that for Charaka embryology was never merely biological. It was a doorway into the nature of the person — the same reverence for the living essence that the tradition elsewhere expresses in its account of ojas, the subtle essence of vitality, and in its lifelong attention to each person’s individual constitution, or prakriti.

Satmyaja, Rasaja and Sattvaja: Suitability, Nutrition and Mind

The remaining three factors round out the person, moving from the physiological to the moral. They are easy to underrate beside the drama of body and soul, but they carry a great deal of Ayurveda’s distinctive wisdom.

The satmyaja bhava is the contribution of satmya — wholesome suitability, that which agrees with and sustains a given constitution. Satmya is one of Ayurveda’s most characteristic ideas: not what is good in the abstract, but what is suitable to this person. Its contribution to the forming being is a cluster of good conditions — freedom from disease and from laziness, cheerfulness and clarity of the senses (prasanna indriya), excellence of voice and complexion, and a sound reproductive vigour. Satmya, in other words, contributes thriving — the difference between merely existing and existing well. It is the factor that ties the new life to the whole Ayurvedic art of living in a way that agrees with one’s own nature.

The rasaja bhava is the contribution of rasa — here the nourishing essence drawn from food, the first of the bodily tissues. Without nourishment, the text observes with plain good sense, not even the mother could survive, let alone the growth of the embryo. What rasa contributes is the sheer substance and continuance of the body: its formation and growth (abhinirvriti), the maintenance of the vital breath, contentment (tripti), a well-nourished fullness (pushti), and strength and vigour (bala, utsaha). Rasa is where the six-factor scheme touches the tradition’s wider physiology of the tissues, the sapta dhatu, in which rasa is the first-formed tissue that goes on to nourish all the rest.

Finally, the sattvaja bhava — the contribution of sattva, the mind or psyche — gives character. This is the factor responsible for a person’s inclinations and conduct, their cleanliness and their memory, their attachments and aversions, their courage or fear, anger or calm, their steadiness or instability. Charaka notes, too, that the mind (sattva) is of three broad types — the pure or shuddha (sattvika), the rajasa, and the tamasa — and that the quality dominant in a mind tends to carry forward. He even remarks that a person of especially pure sattva may recollect a previous life, a jatismara. This threefold psychology sits at the root of Ayurveda’s whole account of temperament; we explore it in depth in our guide to the three gunas — sattva, rajas and tamas. With these three — suitability, nourishment and mind — the roll of the six is complete: a human being fully accounted for, from bone to character.

Panchamahabhautika Garbha: Five Elements and Consciousness

The fourth chapter, Mahati Garbhavakranti, now shifts from where the parts come from to what they are made of at the deepest level — and here Charaka reaches for the tradition’s cosmology. The embryo, he says, is panchamahabhautika: it is built from the five great elements — akasha (space or ether), vayu (air), tejas or agni (fire), ap or jala (water) and prithvi (earth) — and it is the seat of consciousness. Consciousness (chetana) is counted as the sixth constituent, so that the forming being is an aggregate of the five elements plus the awareness that dwells in them. Matter and mind, five and one, are joined from the very first.

There is a lovely cosmological order to how this happens. The self, taking on a body, is said to take up the elements in sequence — akasha first, the subtlest, and then vayu, tejas, ap and prithvi in turn, each grosser and more manifest than the last. This is exactly the order in which the classical cosmology has the universe itself unfold, from the most subtle element to the most dense. The forming of a single body is made to echo the forming of the whole world — a theme that will reach its climax shortly. And each element, once taken up, contributes its own signature to the body. The text sets this out with real precision:

Read that table slowly and something quietly brilliant appears. Charaka is deriving the whole sensory and physical body from five elemental principles: the very faculty of hearing from the element of open space, of touch from air, of sight from fire, of taste from water, of smell from earth — and the body’s heaviness from earth, its warmth and digestion from fire, its fluidity from water, its movement from air. It is a complete, internally consistent scheme in which the person is woven from the same five threads as the cosmos. If you would like the fuller story of these five principles in their own right, we devote an entire guide to the pancha mahabhuta, the five great elements.

Earth, water, fire, air and space — the pancha mahabhuta. Charaka holds the embryo to be built of these five, housing consciousness (chetana) as a sixth constituent: the very faculties of hearing, touch, sight, taste and smell derived, one from each element. Shown here as classical scholarship

Masanumasika: The Month-by-Month Unfolding of the Garbha

Having said what the embryo is made of, Charaka describes how it unfolds — the garbha vriddhi krama, the order of the embryo’s growth, which the tradition would later elaborate into a famous month-by-month (masanumasika) account. Our chapter gives the opening stages with a naturalist’s eye for change over time. In the first month, the forming being is a kalala — a turbid, jelly-like, only half-formed mixture, its parts still “unmanifest,” described as being like phlegm: everything is present but nothing is yet distinct. In the second month, it solidifies and takes on a more definite mass. And by the third month, in a striking observation, all the main parts of the body are said to appear together, more or less simultaneously (yaugapadya) — not one organ finished before the next begins, but the whole plan emerging at once.

There is a real elegance in that last point. A tradition without microscopes nonetheless noticed something true to the feel of development: that the body does not assemble itself part by part like a machine on a line, but differentiates as a whole, all its regions taking shape together. Held as the history of observation — how careful minds two thousand years ago described the unfolding of life — it is genuinely impressive.

Beyond the third month, the classical masanumasika tradition continues month by month — describing the gradual completion of the parts, the awakening of the senses and, in the later months, the stirring of the fetus’s own awareness, a theme we return to at the close of this guide. The care of the expectant mother through these months is itself a whole classical discipline, the garbhini paricharya, which the Charaka Samhita sets out in its own right; if the classical view of that care interests you as heritage, our guide to garbhini paricharya covers it. As always, everything here is offered as classical scholarship; anything to do with an actual pregnancy belongs entirely with a qualified healthcare professional.

Life unfolds in an order: from the turbid kalala of the first month to the whole body’s parts emerging together by the third. The classical masanumasika account watched development as a patient, staged unfolding — shown here as a botanical study, and as classical scholarship

Loka-Purusha Samya: The Person Is Equal to the Universe

Now comes the passage that lifts these two chapters from careful biology into something like a vision. Having built the embryo from the five elements and their consciousness, Charaka draws the conclusion that follows — and it is one of the grandest single statements in all of Ayurveda. The person is equal to the universe. Whatever formed entities are found in the great world (loka), he says, are also found in the person (purusha) — and whatever is in the person is also found in the world. This is the doctrine of loka-purusha samya: the fundamental likeness, even identity, of the microcosm and the macrocosm.

The logic is not mystical hand-waving; it follows directly from everything that has come before. If the same five mahabhutas — earth, water, fire, air and space — compose both the cosmos and the body, then the body genuinely is a small world, a kshudra brahmanda, made of the very same stuff and the very same principles as the vast one outside it. The heat in your digestion and the fire of the sun are, at the elemental level, the same tejas; the water in your tissues and the rivers of the earth are the same ap; the space within you and the sky are the same akasha. To understand the world is, in part, to understand yourself, and vice versa — which is precisely why Ayurveda studies food, season, land and cosmos so closely in order to understand health.

It is worth savouring what a humane and dignifying idea this is. To hold that a human being is a whole universe in miniature is to hold that each person is inexhaustibly worthy of attention and care — and that instinct runs like a golden thread through the entire tradition. Charaka develops loka-purusha samya more fully in the very next chapter of the Sharira Sthana (the Purusha-vichaya, the “inquiry into the person”), but its seed is right here, in the account of how a single embryo is formed from the elements of the world. From the smallest beginning, Charaka draws the largest conclusion. Few passages in the history of medicine reach so far on so firm a footing.

Rasa, Varna and the Body’s Surface: A Note on Everyday Care

There is one gentle thread in all of this that leads honestly back to everyday life — and it is worth following carefully, precisely because the rest of the article is so far from any product. Among the six factors, the rasaja bhava gave the body its nourishment and substance; and among the maternal, matrija-derived parts, the very first named was the skin (twak) — the body’s visible, outermost layer. The classical tradition draws a lovely bridge between the two: a well-formed rasa, the nourishing essence, is said to show outwardly in prasanna varna — a clear, pleasant complexion — and in prabha, a soft natural radiance. The skin is where the body’s inner nourishment quietly appears on the surface.

That is why Ayurvedic self-care has always begun at the surface — and it marks the one honest place a wellness brand belongs in a scholarly article like this. Not in the measured interior of the six factors, which is the province of classical philosophy and, in real life, of doctors; but in the small, ordinary, pleasant rituals of caring for the skin, the outermost visible layer, as part of a calm daily routine. The tradition’s tenderness toward the whole forming person — captured beautifully in the classical idea of dauhrida, the “two-hearted” state in which the wishes of the developing life are honoured through the mother — models a gentleness we can carry into how we treat our own bodies, at the simple level of everyday care.

The honest place for everyday self-care is at the surface: the small, pleasant cosmetic comforts of tending the skin — the body’s visible outermost layer, and the outward face of a well-formed rasa. Ordinary cosmetic heritage, and nothing to do with the six factors, the interior, or any treatment

The first is a daily favourite of the Indian bathing tradition — the ubtan, the classical cleansing paste for the skin. Our Divya Snaan carries that idea into a modern cleansing bar for the body and face.

The second belongs to the classical love of a fragrant facial oil, valued in the old cosmetic tradition simply as a gentle night-time ritual for the look of the skin.

That is the whole of the honest place for any of this: a couple of small, pleasant comforts for the skin, within a calm and well-ordered day. The classical authors, tracing a human being back to six converging factors and to the five elements of the cosmos, would recognise the instinct behind it — that to care for the visible surface is to honour the outermost layer of a body they took such extraordinary trouble, long ago, to understand.

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