Ayurveda — The Science of Life
Ayurveda (Ayur = "life" + Veda = "knowledge") is India's classical medical system, with continuous practice for over 3,000 years. Recognised by the World Health Organization (WHO) as a traditional medical system, it remains a primary form of healthcare for over 70% of India's rural population.
Origins and Texts
Ayurveda is an Upaveda of the Atharva Veda. Its codified knowledge appears in the Brihat-trayi (Greater Three) and Laghu-trayi (Lesser Three):
Brihat-trayi:
| Text | Author | Focus |
|---|---|---|
| Charaka Samhita | Charaka (~200 BCE – 200 CE) | Internal medicine (Kayachikitsa) |
| Sushruta Samhita | Sushruta (~600 BCE) | Surgery (Shalya Tantra) |
| Ashtanga Hridaya | Vagbhata (~600 CE) | Synthesis of both |
Laghu-trayi:
- Madhava Nidana — Diagnostics
- Sharangadhara Samhita — Pharmacology
- Bhava Prakasha — Materia medica
The Eight Branches (Ashtanga Ayurveda)
┌──────────────────────────┐
│ AYURVEDA │
├──────────────────────────┤
│ 1. Kayachikitsa │ Internal medicine
│ 2. Shalya Tantra │ Surgery
│ 3. Shalakya Tantra │ ENT, ophthalmology
│ 4. Kaumarabhritya │ Paediatrics
│ 5. Agada Tantra │ Toxicology
│ 6. Bhuta Vidya │ Psychiatry
│ 7. Rasayana │ Rejuvenation
│ 8. Vajikarana │ Reproductive medicine
└──────────────────────────┘The Tridosha Theory
Ayurveda's central physiological model: three biological energies govern all bodily functions.
| Dosha | Elements | Function | Imbalance Causes |
|---|---|---|---|
| Vata | Air + Ether | Movement, nervous system | Anxiety, constipation, joint pain |
| Pitta | Fire + Water | Digestion, metabolism | Inflammation, ulcers, anger |
| Kapha | Water + Earth | Structure, immunity | Obesity, lethargy, congestion |
┌─────────────────────────────────┐
│ TRIDOSHA EQUILIBRIUM │
└────────────┬────────────────────┘
│
┌──────────────┼──────────────┐
▼ ▼ ▼
┌────────┐ ┌────────┐ ┌────────┐
│ VATA │ │ PITTA │ │ KAPHA │
│ (V) │ ◄── │ (P) │ ──► │ (K) │
│ Air + │ │ Fire + │ │ Water │
│ Ether │ │ Water │ │ + Earth│
└────────┘ └────────┘ └────────┘
▲ ▲ ▲
└──────────────┴──────────────┘
HEALTH = Balance of V, P, K
DISEASE = Vitiation of one or morePrakriti — Constitutional Type
Each person is born with a unique prakriti (constitution) — a particular ratio of V, P, K. There are 7 types: V, P, K, VP, PK, VK, VPK. Diet, lifestyle, exercise, and treatment must be tailored to one's prakriti.
The Pancha Maha Bhuta Connection
All matter (including the body) is composed of five elements. Each dosha is a combination:
| Mahabhuta | Sense | Where in body |
|---|---|---|
| Akasha (Ether) | Sound (hearing) | Cavities, voice |
| Vayu (Air) | Touch | Breath, movement |
| Tejas (Fire) | Sight | Digestion, vision |
| Jala (Water) | Taste | Blood, mucus |
| Prithvi (Earth) | Smell | Bones, muscle |
Tri-Upastambha — The Three Pillars of Health
According to Charaka, three pillars sustain life:
- Ahara — Diet (right food, right time)
- Nidra — Sleep (sufficient and timely)
- Brahmacharya — Right use of vital energy
The Definition of Health
Sushruta's classical definition:
"Samadosha samagnishcha samadhatu malakriyah, Prasannatmendriyamana svastha ityabhidhiyate." One whose doshas, digestive fire (agni), tissues (dhatus), and excretory functions are balanced, and whose self, senses, and mind are clear and serene — that person is healthy.
This definition is holistic — physical, physiological, sensory, mental, and spiritual all together.