Thousands of leeches are used
for medical emergencies every
year. The leech’s blood sucking
... accelerates healing on any
deep wound but especially
after re-attaching a severed limb or any other deep
wound. The leech feeds off
the oxygenated blood that
would otherwise cause
swelling and gangrene. The
sucking assists the flow of blood and an anticoagulant in
the leech prevents scabbing.
The sucking is painless because
the leech releases an
anesthetic.
Of the 650 types of leeches,
only a small number of Hirudo
species are used, the most
popular being the Hirudo
medicinalis. They’re usually
sold 20 to a pack, at US$7 apiece.
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