American Society of Hirudotherapy

Clinical Significance of Leech Therapy in Indian Medicine

Review published in J Evid Based Complementary Altern Med (2013)

Last Updated: June 18, 2026Reviewed by: ASH Editorial Board
Research article — evidence reviewArticle reference
Evidence: Research reportClinical TrialsSalivary PharmacologyKumar S et al. · Journal of evidence-based complementary & alternative medicine, 2013

Abstract

Traditional Indian medicine-ayurveda-could be the oldest medical system in which leech therapy was adopted for treating specific disease conditions of patients. Some of the indications in which leeches are used are in tumors, hemorrhoids, abscess and boils, skin disorders, ulcers, gout, diseases of the eye, headache, herpes zoster, thrombosis, and wounds. The saliva of the leech consists of anesthetic agents, anticoagulant, antiplatelet aggregation factor, antibiotic, anti-inflammatory substances, and gelatinous substances. Leeches suck the excess blood, reduce the swelling in the tissues, and promote healing by allowing fresh oxygenated blood to reach the area until normal circulation can be restored. Clinical studies have been conducted in different parts of the world to observe the scientific action of leech therapy. Studies with leeches have been carried out to observe the healing of complicated varicose veins, pain reduction in osteoarthritis, and other disorders.

Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.

Publication typeJournal Article

Summary

Comprehensive review of leech therapy in Ayurveda Indian medicine, indications include tumors, hemorrhoids, skin disorders, gout, eye diseases, headache, herpes zoster, thrombosis, and wounds.

Why This Matters for Hirudotherapy

This article discusses leech therapy within traditional Indian Ayurvedic medicine, listing indications such as tumors, hemorrhoids, abscesses and boils, skin disorders, ulcers, gout, eye diseases, headache, herpes zoster, thrombosis, and wounds. It describes leech saliva as containing anesthetic agents, an anticoagulant, an antiplatelet aggregation factor, antibiotic and anti-inflammatory substances, and gelatinous substances, and states that leeches remove excess blood and promote healing by allowing oxygenated blood to reach the area. For ASH's domain, this is relevant as a general account of hirudotherapy rationale and reported salivary activities. The abstract provides no specific sample sizes, controlled outcomes, or original clinical data, so its content is general background rather than evidence from a reported study.

Citation

Clinical Significance of Leech Therapy in Indian Medicine.

Kumar S et al. · Journal of evidence-based complementary & alternative medicine, 2013

Added to ASH library: May 27, 2026 · Site last updated: June 18, 2026

This website provides educational information and does not constitute medical advice, diagnosis, or treatment recommendations. Medicinal leech therapy carries clinically meaningful risks and should be performed only by qualified clinicians under institutionally approved protocols. FDA 510(k) clearance for medicinal leeches is limited to specific indications; investigational and off-label discussions are labeled accordingly. For patient-specific guidance, consult a qualified healthcare provider.