Guna (Qualities)
Ayurveda's 20 opposing qualities — the properties by which every food, herb, and treatment is classified and matched to its therapeutic use.
— Definition
In Ayurvedic pharmacology, Guna refers to the 10 pairs of opposing qualities (20 total) that describe the characteristics of all substances: Heavy/Light, Slow/Sharp, Cold/Hot, Oily/Dry, Smooth/Rough, Dense/Liquid, Soft/Hard, Stable/Mobile, Subtle/Gross, Clear/Cloudy.
— In Detail
Gunas operate on the principle 'like increases like, opposite decreases.' A food with Heavy Guna (like wheat, dairy, meat) increases Kapha (which is also Heavy) and decreases Vata (which is Light). This is why Ayurvedic treatment of Vata disorders (anxiety, dryness, insomnia) prescribes Heavy, Oily foods — to counter the Light, Dry qualities of excess Vata. Food Guna assignments: Ghee is Heavy, Oily, Cold, Smooth; Black pepper is Light, Sharp, Hot, Dry; Barnyard millet is Light, Dry, Cool — ideal for Kapha and Pitta conditions. Understanding Guna allows precise therapeutic food selection beyond the coarser Dosha-level analysis.
— Why It Matters
Guna provides the mechanism behind Ayurvedic dietary prescriptions. Modern research increasingly supports these classifications: 'Hot' Guna foods like black pepper and ginger contain thermogenic compounds (piperine, gingerol) that raise body temperature; 'Heavy' foods like sesame and ghee have high caloric density and fat content that slow digestion as predicted; 'Light' millets have lower caloric density and faster gastric emptying.
— Related Terms
— See in Field Guide
Explore the full glossary.
All key food science, Ayurvedic, and farming terms.