Unani Concepts: Humors (Akhlat) and Temperament (Mizaj)
The Unani ideas of four humors (akhlat) and individual temperament (mizaj), explained as a traditional framework, with what research has and has not checked about them.
Content last updated . This page has not been medically reviewed.
A traditional framework, not a measurement
Unani explains health and illness through ideas inherited from Greek medicine and developed in the Muslim world. This page describes two of them in the tradition's own terms. They are not biology as modern medicine uses the word, and this page offers no way to work out your own type.The four humors (akhlat)
Greek medicine taught that four bodily fluids, or humors (blood, phlegm, yellow bile and black bile), needed to be kept in balance. [1] Unani carries the same four. [2] A review of Unani's Greek roots adds that the system sees the body as made of four elements, different temperaments, simple and compound organs and the four humors. [3] In the tradition each humor "contributes its own characteristics and temperament to the body," and care aims to bring them into balance. [2]Temperament (mizaj)
Unani scholars hold that every person has a distinct temperament built from combinations of the humoral qualities. [4] In Persian medicine, which shares the concept, mizaj is described as covering individual differences in physical, psychological, spiritual and bodily functions, and as organized along hot-cold and wet-dry qualities. [5][6] The same source says a similar disease in people of different mizaj may call for different treatments. [5]Temperament is said to be shaped by age, mental state, local climate and surroundings. [4] In practice, the tradition fits diet and medicines to the person's temperament. [4] Unani writers also describe six essential factors of daily life (asbab sitta darooriya) alongside temperament as the basis of prevention. [7]
How practitioners traditionally assess it
A reference source reports that a traditional examination includes the tongue, pulse, urine and stool to judge the balance of humors. [2] A study of Persian-medicine experts lists ten criteria for judging mizaj, most of them qualitative. [6] This site does not reproduce them, and it does not offer a quiz or self-assessment. These judgments belong in a conversation with a trained practitioner who also pays attention to your medical history.What research has checked
| Question | What the source found | Strength of evidence |
|---|---|---|
| Can mizaj be measured reliably? | A systematic review of 54 articles found 37 studies used questionnaires and 10 used expert panels. Of the two whole-body questionnaires, neither had sufficient reliability and validity. [8] | Insufficient evidence |
| A newer questionnaire for adults over 60 | One study reported sensitivity and specificity of 83% and 88% for "warmness," lower for other categories. [9] | Preclinical / early validation |
| Does matching treatment to mizaj improve outcomes? | We found no trial of this in the sources we read. Proper evidence not found. | Traditional use only |
| Do humors exist as measurable body fluids that cause illness? | Not tested as such in the sources read. | Traditional use only |
These findings come from Persian-medicine research groups that share the concept with Unani, so they say nothing about how Unani practitioners in India would perform. The reliability results mean that two practitioners might not reach the same answer, which is a reason for caution about any type label.
Related
See the overview Unani medicine, the history of Unani, regimenal therapies, and the glossary.Frequently asked questions
What does mizaj mean?
It is the Unani and Persian term for a person's temperament, a traditional description of their characteristic balance of qualities such as hot-cold and wet-dry. [5]
Are the four humors real?
They are a traditional explanation inherited from Greek medicine, not something modern medicine measures. [1]
Can I find out my mizaj online?
This site does not offer that. A systematic review found that no whole-body mizaj questionnaire had sufficient reliability and validity. [8]
Does Unani treat everyone the same?
No. The tradition says treatment should fit the person's temperament. [4] Whether that improves outcomes has not been shown in the sources we read.
Is mizaj the same in Unani and Persian medicine?
The concept is shared, and the research cited here comes from Persian-medicine groups, including some Unani-faculty co-authors. [5][6]
More details: evidence, limits and cautions
The details behind this page: cautions, limits of the evidence and where sources disagree. Open any note to read it.
Cautions
- Do not use a temperament label to choose herbs, foods or fasting for a medical condition.
- A "cold" or "hot" label is a traditional description of qualities. It is not a diagnosis, and it does not replace blood tests, imaging or a doctor's examination.
- If a practitioner advises stopping prescribed medicine on the basis of your temperament, talk to your prescriber first.
- NCCIH advises telling all your health care providers about the complementary approaches you use. [10]
References
- US National Library of Medicine, History of Medicine Division. Ancient Greek Medicine. Read 2026-10-22.
- EBSCO Research Starters. Unani medicine. Read 2026-10-22.
- Poulakou-Rebelakou E, Karamanou M, Androutsos G. The impact of ancient Greek medicine in India: the birth of Unani medicine. Acta Medico-Historica Adriatica 2015. PubMed 27604201 (abstract). Read 2026-10-22.
- Parveen A and others. Concepts and Quality Considerations in Unani System of Medicine. Journal of AOAC International 2020. PubMed 31547901 (abstract). Read 2026-10-22.
- Tansaz M and others. Principle of Hot and Cold and Its Clinical Application in Persian Medicine. Advances in Experimental Medicine and Biology 2021. PubMed 35015275 (abstract). Read 2026-10-22.
- Mojahedi M and others. The weight of Mizaj (temperament) indices in Persian Medicine: a Delphi study. Caspian Journal of Internal Medicine 2023. PubMed 37520882. Read 2026-10-22.
- Shehilla, Nabi A, Ahmed I. The Concept of Preventive and Social Medicine in Unani Perspective. Alternative Therapies in Health and Medicine 2026. PubMed 41698021 (abstract). Read 2026-10-22.
- Ahmadi M, Shirafkan H, Mozaffarpur SA. Assessment of the Diagnostic Methods of Mizaj in Persian Medicine: a systematic review. Diagnostics 2023. PubMed 36899961. Read 2026-10-22.
- Akhtari M and others. Development and validation of self-report Mizaj identification questionnaire based on Persian Medicine for the elders. Caspian Journal of Internal Medicine 2024. PubMed 38463927. Read 2026-10-22.
- NCCIH (US). 6 Things To Know When Selecting a Complementary Health Practitioner. Read 2026-10-22.