Key Concepts

  • Ayurveda ("science of life" in Sanskrit) is India's classical system of medicine, documented in the three foundational texts: Charaka Samhita, Sushruta Samhita, and Ashtanga Hridayam
  • Sushruta is called the "Father of Surgery" — his text describes rhinoplasty, cataract surgery, and over 300 surgical procedures
  • The Ministry of AYUSH was established in November 2014 to promote traditional Indian medicine systems
  • Relevant for UPSC GS-1 (cultural heritage), GS-2 (health policy, AYUSH), and occasionally GS-4 (ethics of traditional vs. evidence-based medicine)

Core Theory — Tridosha

Ayurveda holds that the human body and all of nature are composed of the Panchamahabhuta (five great elements: earth, water, fire, air, space) and that health depends on the balance of three doshas (bio-energies):

Dosha Elements Governs
Vata Air + Space Movement, nervous system, breathing
Pitta Fire + Water Digestion, metabolism, intelligence
Kapha Water + Earth Structure, immunity, lubrication

Disease arises from imbalance (vikriti) in the doshas relative to one's natural constitution (prakriti).

Charaka Samhita — Internal Medicine

The Charaka Samhita is the foundational text of Ayurvedic internal medicine (kayachikitsa).

Feature Detail
Original composition Compiled from the teachings of Punarvasu Atreya by his disciple Agnivesha; then redacted by Charaka
Dating Scholars place it between 100 BCE and 200 CE; the current text was further revised by Dridhabala in the 6th century CE
Structure 8 books (Sthanas), 120 chapters; covers diagnosis, pathology, therapeutics, pharmacology, and medical ethics
Focus Kayachikitsa — internal medicine; also covers diet, rejuvenation therapy (Rasayana), and reproductive health
Key contributions Early understanding of metabolism, digestion, and the concept of agni (digestive fire); detailed pharmacopoeia of medicinal plants

Sushruta Samhita — Surgery

Sushruta (fl. c. 600 BCE, based in Varanasi) authored the foundational text of Indian surgery.

Feature Detail
Status Sushruta is known as the "Father of Surgery" and the "Father of Rhinoplasty"
Surgical instruments Described 120 surgical instruments (shalya yantra)
Procedures Described 300 surgical procedures across 8 categories of surgery
Rhinoplasty Described nasal reconstruction using a flap from the cheek or forehead — a technique still called the "Indian flap" and practiced in modern plastic surgery
Cataract surgery Described "couching" — using a sharp curved needle (jabamukhi shalaka) to displace the clouded lens
Other procedures Hernia repair, bladder stone removal, Caesarean section procedures, eye surgery
Anatomy Conducted cadaver dissection (shava vyavachchheda) for anatomical study — centuries before European anatomy

Vagbhata and the Ashtanga Hridayam

Vagbhata authored the Ashtanga Hridayam ("Heart of the Eight-Limbed [Medicine]"), broadly dated to the 5th–7th century CE. It synthesised the teachings of Charaka and Sushruta into a concise, systematically organised text.

  • Widely considered Ayurveda's greatest classic by number of surviving manuscript copies
  • Covers all eight branches of Ayurveda: Kayachikitsa, Balachikitsa, Graha, Urdhvanga, Shalya, Damshra, Jara, and Vrisha
  • Vagbhata is believed to have been a Buddhist physician; his text was translated into Tibetan and Arabic, spreading Ayurvedic knowledge across Asia

Nagarjuna and Rasa Shastra

Nagarjuna (c. 8th century CE; distinct from the 2nd-century Buddhist philosopher of the same name) is credited with systematising Rasa Shastra — the branch of Ayurveda dealing with the therapeutic use of purified metals and minerals.

  • Rasa (Sanskrit: mercury) is considered the king of metals in Indian alchemy
  • Rasa Shastra involves processes of Shodhana (purification) and Marana (calcination) to detoxify metals for medicinal use
  • Nagarjuna is called the "Father of Rasashastra"
  • Contributed to the preparation of medicinal formulations from mercury, gold, iron, and other minerals

Eight Branches of Ayurveda (Ashtanga Ayurveda)

Branch Scope
Kayachikitsa Internal medicine
Balachikitsa (Kaumarabhritya) Paediatrics
Graha Chikitsa Psychiatry and spiritual disorders
Urdhvanga Chikitsa Diseases of ears, eyes, nose, throat
Shalya Tantra Surgery
Damstra Chikitsa (Agada Tantra) Toxicology
Jara Chikitsa (Rasayana) Geriatrics and rejuvenation
Vrisha Chikitsa (Vajikarana) Reproductive health and aphrodisiacs

AYUSH Ministry and Modern Context

The Ministry of AYUSH (Ayurveda, Yoga and Naturopathy, Unani, Siddha and Homoeopathy) was established on 9 November 2014 — elevated from a Department (which had existed since 2003) to a full-fledged Ministry under the Government of India.

Key developments:

  • WHO Traditional Medicine Strategy (2014–2023, followed by 2025–2034) recognises traditional medicine systems including Ayurveda
  • India's Traditional Knowledge Digital Library (TKDL) documents traditional Ayurvedic formulations to prevent biopiracy
  • The Pharmacopoeia of India and Ayurvedic Pharmacopoeia of India standardise herbal and mineral formulations
  • Growing international interest in Ayurveda as part of integrative medicine, though scientific validation of individual treatments remains ongoing

PYQ Relevance

  • UPSC Prelims: "Which of the following is NOT a branch of Ayurveda?", questions on Charaka vs. Sushruta's areas of focus
  • Mains GS-1: "Discuss India's ancient medical traditions and their relevance today"
  • GS-2: AYUSH policy, integration into mainstream health systems
  • Sushruta and rhinoplasty is a commonly cited UPSC fact

Exam Strategy

  • Key distinction: Charaka = internal medicine; Sushruta = surgery; Vagbhata = synthesis/compilation
  • AYUSH Ministry established 2014, not 2016 — a common factual error in coaching notes
  • Sushruta described 120 instruments and 300+ procedures — these exact numbers are tested
  • For Mains: Frame Ayurveda as a holistic knowledge system integrating biology, ecology, and medicine — and discuss the challenge of evidence-based validation in the modern context