In the human physiology, these three energies tend to interact in a harmonious and compensatory way to govern and sustain life. Their relative expression in an individual implies a unique ratio of the functioning of these governing principles according to each person’s unique DNA (vta-pitta-Kapha ratio) determined at conception. This is the body or constitutional typing, called Prakruti. There are seven types – Vata type, pitta type, Kapha type and combinations thereof.
Prakruti yields two important understandings. A person has a permanent or stable nature for the entire life and efforts to maintain or change physiology must keep this balance point in mind. In addition, each type will suggest an area tending to go out of balance, a disease tendency, requiring lifelong attention to maintain balance. A Vata type naturally tends to constipation, arthritis, anxiety; a pitta type tends towards inflammations, infections, ulcers; and Kapha types tend to overweight, diabetes, congestive disorders, etc. The implication of Prakriti is that it helps explain why people react differently to the same things. The medical implication for this is that certain people will have a natural predisposition or sensitivity to certain medicines and this can be predicted.

​Why does imbalance occur? It occurs because one or more of the energies or elements described above gets increased quantitatively or altered qualitatively. There is no human experience, whether a thought, an emotion, the climate, food, lifestyle, etc. that does not have at least one of the twenty qualities which, by its action, yields an effect in the physiology.