What Are Vata, Pitta, and Kapha Body Types? A Gentle Guide to Ayurveda’s “Prakriti” (Body Type)

1. What is constitution (Prakriti)?

In Ayurveda, the constitution a person is born with is called Prakriti. In Sanskrit, this term means “original nature.”

When you hear “innate constitution,” you might think of what you inherited from your parents. However, the constitution referred to here is slightly different. While major factors such as height and intelligence are influenced by your parents, constitution — what tendencies are most likely to emerge and where imbalances are most likely to occur — is thought to be determined at the very early stages of development in the womb. We will look at this in more detail in a later chapter.

The foundation here is the Tridosha theory. This is the idea that our bodies are composed of three functions: Vata (which governs movement), Pitta (which governs transformation), and Kapha (which governs structure).

The starting point of Ayurvedic constitutional theory is that the proportions of these three functions differ from person to person, and these differences are what constitute one’s constitution. It is believed that depending on which function is more dominant, everything from body type and how health is affected to behavioral tendencies will differ.

What is interesting is that this idea of constitution is not unique to humans. Diversity in constitution can also be seen in other mammals. It is believed that having various types within the same species has been advantageous for adapting to environmental changes and ensuring the survival of the species.

2. Constitution viewed from both the “body” and the “mind”

Ayurvedic constitutional theory has two branches.

• Physical constitution (bodily Prakriti) — body type and physiological tendencies. It reflects the Tridosha.
• Mental constitution or temperament (mental Prakriti) — mental activity and behavioral tendencies. It reflects the Triguna.

The Triguna (Sattva, Rajas, and Tamas) was covered in detail in the article on Sankhya philosophy. This is the idea of analyzing all phenomena in the natural world into three states.

The body is understood through the Tridosha, while the mind is understood through the Triguna. The same idea of “dividing into three” is applied to both the body and the mind. And the two are not considered separate but are thought to be interrelated.

3. The three physical constitutions — Vata, Pitta, and Kapha

First, let’s look at the body. Depending on which dosha is dominant, there are three types.

As you read, did anything come to mind that made you think, “This might be me”? However, the traits listed here are merely tendencies, not a matter of superiority or inferiority. Every constitution has both strengths and weaknesses — this is the consistent view of Ayurvedic constitutional theory.

4. The three temperaments — Sattva, Rajas, and Tamas

Next, let’s look at the mind. Here, the three Trigunas are used directly to classify temperaments.

Traditionally, a state dominated by Sattva has been considered desirable. However, the true ideal is a state in which all three are well-balanced. This is called the “saintly type” and has long been considered the ideal, combining aspiration and compassion.

It is also important that, unlike body type, temperament has been considered changeable through effort. Knowing your tendencies can provide clues for adjusting your daily behavior or rethinking how you interact with others.

5. How constitution is actually viewed as a “combination” — 7 types

So far, we have looked at three types each. However, real people are not that simple. It is rare for someone to be purely one type, and most people are understood as a combination of two.

In terms of physical constitution, there are the following seven combinations.

The same applies to temperament, which can be divided into seven combinations of Sattva, Rajas, and Tamas.

In other words, the seven types of body and the seven types of mind combine to form a person’s constitution. It is probably best to think of “Vata constitution” as a broad term that actually encompasses a much finer gradation of traits.

6. Similarities with modern body type classifications

Here, we will also touch on the relationship with modern body type classifications.

In the 1940s, American psychologist William Sheldon published research classifying human body types into three categories. He argued that body type determines personality and behavioral tendencies. The three types he presented were as follows.

When placed side by side, you can see that Ayurveda’s three constitutions share many similarities with these classifications.

Ayurvedic constitutional theory is said to have influenced Greek and Chinese medicine since ancient times. It may be more natural to see that the idea of classifying people into three types has been passed down across regions and eras, surviving into the present day in different forms.

Another point that cannot be overlooked is the terms Sheldon used: “ectoderm,” “mesoderm,” and “endoderm.” These are embryological terms referring to the earliest stages of body formation from a fertilized egg. This sets the stage for the next chapter.

7. Where is constitution determined? — 2 clues

From here, we will explore the relationship between constitution and health from a scientific perspective.

It has not yet been completely determined where constitution is determined. However, two compelling clues have been identified: the formation of the “germ layers” that occurs at the very beginning of development, and how genes involved in shaping the body function. We will look at them in order.

Clue 1: The process of germ layer formation

Our bodies are formed as fertilized eggs repeatedly divide. At this early stage, cells are divided into three major groups. These are the ectoderm, mesoderm, and endoderm. And it is predetermined which part of the body each will become.

Looking at this correspondence, the characteristics of each constitution make sense. If the nervous system develops more prominently, Vata-like delicacy emerges; if muscles and skeleton are more dominant, a Pitta-like sturdy build develops. If the digestive system is more dominant, it leads to a Kapha-like thick-set build.

It is believed that which of the three germ layers develops more strongly is determined by slight fluctuations at the very beginning of development after fertilization. If that is the case, constitution is largely determined well before birth, while still in the womb.

This leads to one surprising conclusion: constitution is not necessarily passed from parent to child. While factors such as height and skeletal size are influenced by one’s parents, which dosha becomes dominant depends on these early developmental fluctuations, so it is not surprising if siblings or parents and children have different constitutional types. In fact, it is probably not uncommon for one person in a family to have a different body type and temperament from the rest.

The fact that classifications based on ancient Indian observations correspond so neatly with the framework of modern embryology is interesting enough in itself.

Clue 2: How genes that shape the body function

Another area of interest is a group of genes called HOX genes. These are genes involved in forming the body’s anterior-posterior axis (head, chest, and torso), and they control where and how the fine structures from the head to the toes are arranged.

In mammals, about ten very similar genes are lined up next to each other on the chromosomes. Furthermore, this group exists in three sets, each on a different chromosome.

What is interesting is that although these genes continue to function into adulthood, there are large differences between people in the strength of their expression. Furthermore, genes belonging to the same set tend to act in concert, becoming either strongly or weakly expressed together.

This has led to a hypothesis: perhaps which of the three sets functions more dominantly creates the three constitutions. For example, Vata-type people may have one specific set that is strongly expressed, while balanced-type people have all three sets expressed in balance.

This is still a hypothesis and has not yet been confirmed. However, these genes are also thought to be involved in fine features such as eye shape and hair, and it is believed that they may also be involved in forming the body’s fine structures after the germ layers have formed. If that is the case, it would provide a cellular and genetic explanation for the ancient concept of constitution.

8. Why do people react differently even when eating the same thing?

So far, we have discussed how constitution is determined. How, then, do these differences manifest in the actual body? Let’s look at the tendency to gain weight as an easy-to-understand example.

When overeating or stress continues, the body generally reacts in the following order.

• Sensors in the body detect excess nutrients or stress
• Receptors receive that signal
• Genes are expressed in response
• Hormones and neurotransmitters are produced
• As a result, metabolism is suppressed, and fat is stored

Genes that work to store energy in preparation for famine are called “thrifty genes.” This mechanism worked advantageously for survival in the natural world, where food was unstable.

The important point here is that there is not just one type of sensor or receptor, but many. And there are considerable differences between people in how much and how each one functions. This is precisely why some people gain weight when eating the same amount of the same food while others do not.

What Ayurveda has called “constitution” can perhaps be understood as the cumulative result of these individual differences at the molecular level — this is how current research is proceeding. It means that people in ancient times classified and categorized these manifestations without knowing anything about molecules.

9. Is it innate or can it be changed?

Here, we will address a question that many people are likely to wonder about: Can constitution be changed?

Prakriti and Vikriti

Ayurveda has two terms to answer this question.

• Prakriti — the constitution a person is born with
• Vikriti — the state that has changed from that due to various factors

The state of health we feel every day is not Prakriti itself, but Vikriti. And Vikriti constantly fluctuates depending on lifestyle, diet, environment, age, season, and the time of day.

Factors affecting constitution have a hierarchy

The factors that influence constitution can be broadly divided into innate and acquired factors. Interestingly, it is believed that these factors have a hierarchy in terms of their influence. Genes inherited from parents determine macro traits, but please also note that early germ layer formation and HOX genes are involved in forming the microstructures at birth.

In other words, while your basic constitution cannot be changed, you can influence your state from that point onward.

An innate constitution is not necessarily “good”

What is often discussed here is the idea that the greater the gap between Prakriti (original constitution) and Vikriti (current state), the more strain is placed on the body. For example, someone who is naturally Pitta-type may have become more Vata-like due to their lifestyle. Let’s narrow that gap and return to their original state — you may have heard this kind of explanation.

This is, in itself, a logical way of thinking. However, if we take it one step further, there is a point that is often overlooked.

Prakriti, or the constitution a person is born with, is not necessarily the healthiest state for that person. Innate tendencies have both strengths and weaknesses. If a weak tendency becomes pronounced, it can lead to a constitutional illness. If that is the case, simply returning to the original state cannot be said to be the goal.

This is precisely why it is meaningful to understand your tendencies and adjust them through diet and lifestyle. Knowing your constitution is not about labeling and giving up on yourself. It is more like a map that helps you identify where you are prone to imbalance so you can take action.

10. Summary

Let’s summarize the content covered here.

So, once you know your constitution, what exactly should you do? How to eat, sleep patterns, and how to choose exercise — Ayurveda has developed incredibly detailed guidelines for each constitution.

Each of these is certainly extensive. However, if you understand the principles we have looked at here — which function is most likely to become dominant and where imbalances are most likely to occur — the individual guidelines will not be something you have to memorize, but will instead make sense as “why we do this.”

Next time, we plan to share health methods for each constitution. In particular, we will explain the mechanism behind individual differences in hair and how to address them, as well as how to use Ayurvedic herbal formulations, in which Ayurveda excels.