A systematic overview of the medicinal importance of sanguivorous leeches
Research article published in Alternative medicine review (2011)
Abstract
Leeches are a class of segmented invertebrates, known for their blood-feeding habits and used in phlebotomy to treat various ailments since antiquity. In Europe, medicinal leeches have recently been rediscovered and are used by maxillofacial and other microsurgeons to aid salvage of compromised venous engorged tissue and amputations, such as digits, ears, and nasal tips. Because of their important salivary components, blood-sucking (sanguivorous) leeches, such as Hirudo medicinalis and related species, have engendered great interest from pharmaceutical companies searching for anticoagulants to prevent blood clotting during microsurgeries. Scientific research reveals that the beneficial effects of leeching, in addition to decongestion, include injection of a cocktail of several medicinally useful bioactive molecules present in their saliva. Owing to its therapeutic potential, the research is continuing as many new salivary compounds are being isolated and synthesized.
Abstract sourced from PubMed (NCBI) for the cited record. See the original publication for the authoritative version.
Summary
A systematic overview of the medicinal importance of sanguivorous leeches.
Why This Matters for Hirudotherapy
This review summarizes the historical and modern medicinal importance of sanguivorous leeches, focusing on Hirudo medicinalis and related species. It describes how European maxillofacial and microsurgeons use medicinal leeches to salvage compromised venous-engorged tissue and amputations (digits, ears, nasal tips), and highlights that leech saliva contains a cocktail of bioactive molecules with anticoagulant and decongestive properties of pharmaceutical interest. The article is squarely within ASH's domain, offering a concise overview of hirudotherapy and leech-secretome pharmacology. Caveat: as a narrative review it provides no new primary data, meta-analysis, or systematic grading of evidence.
Citation
Added to ASH library: May 27, 2026 · Site last updated: June 18, 2026