The nine TCM body constitutions

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What are the nine TCM body constitutions?
Origin of the classification
The nine constitutional types
Mixed constitutions
Can your constitution change?
Related pages

1. What are the nine TCM body constitutions?

The nine body constitutions are a classification developed by Professor Wang Qi of the Beijing University of Chinese Medicine that groups people into nine recognisable patterns of physical, physiological and psychological characteristics. Each constitution carries different vulnerabilities to disease and responds best to a specific dietary and lifestyle approach. Identifying your constitution — or the dominant one in a mixed presentation — is the practical starting point of personalised Chinese food therapy.

Unlike a one-size-fits-all dietary recommendation, the constitution-based approach matches food choices to who you actually are. The same plate of food that nourishes a yang-deficient person can aggravate a damp-heat person; what cools a yin-deficient body can chill a yang-deficient one. Understanding your constitution is therefore the first step in choosing food therapeutically.

2. Origin of the classification

The roots of constitutional medicine reach back to the Huangdi Neijing (Yellow Emperor's Classic of Internal Medicine, c. 300 BCE), which describes constitutional types based on the five elements and yin-yang theory. The modern nine-constitution system was formalised by Wang Qi in the 1970s and has since been widely adopted in TCM clinical practice and research, with validated questionnaires translated into multiple languages.

3. The nine constitutional types

Click each constitution for the full dietary plan, recognisable signs, and tendencies:

Balanced (Ping He) — the ideal constitution: even temperament, good energy, regular digestion, sound sleep.
Qi deficient (Qi Xu) — tired, breathless on exertion, soft voice, poor immunity, prone to colds.
Yang deficient (Yang Xu) — cold hands and feet, intolerance to cold, pale, low libido, loose stools.
Yin deficient (Yin Xu) — thin build, hot palms and soles, night sweats, dry mouth, restless sleep.
Phlegm-damp (Tan Shi) — overweight, heavy and sluggish, oily skin, fullness in chest, prone to PCOS and metabolic problems.
Damp-heat (Shi Re) — oily skin, acne, bitter taste, dark urine, prone to inflammation and heat conditions.
Blood stasis (Xue Yu) — dull complexion, dark lips, fixed pains, prone to endometriosis and clotting.
Qi stagnation (Qi Yu) — emotionally sensitive, sighing, breast tenderness, distending pains, prone to depression and PMS.
Special diathesis / allergic (Te Bing) — allergic tendency, eczema, hayfever, asthma, food sensitivities.

Take the self-assessment quiz on the main Chinese food therapy page if you are not sure which type best fits you.

4. Mixed constitutions

In practice, most people show a mixture of two or three constitutional patterns rather than a single pure type. Common combinations include qi deficiency with yang deficiency (very tired and very cold), yin deficiency with qi stagnation (anxious, dry, restless), and phlegm-damp with damp-heat (overweight with inflammation). Dietary recommendations are adjusted to address the dominant patterns first, with secondary patterns addressed once the main imbalance has improved.

5. Can your constitution change?

Constitution has a strong genetic component but is not entirely fixed. Long-standing dietary, lifestyle and emotional patterns can gradually shift constitution — a person born qi-deficient can become more balanced over years of consistent qi-tonifying food and lifestyle, just as a balanced person can drift into damp-heat after years of overconsumption of alcohol, fried food and overeating. Acupuncture, Chinese herbal medicine and food therapy work together to gently move constitution towards the balanced (Ping He) ideal.