By Gurpreet Singh | October 14, 2025
Leeches are segmented worms, part of the annelid family. Many feed on blood, while others consume small invertebrates.
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Leeches are often feared as dangerous parasites, but most are harmless. Here are some myths about leeches you must know.
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Not all leeches are harmful. Most freshwater leeches feed on small insects or detritus, posing little risk to humans.
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Leech bites rarely lead to infections if cleaned properly. Their saliva contains anticoagulants and mild antiseptic properties.
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Leeches do not actively chase humans. They attach only when in contact with water or skin.
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Proper removal is painless. Gently sliding a fingernail or salt near the attachment detaches the leech without harming skin.
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Only a fraction of leech species feed on blood. Others survive by consuming small invertebrates or organic debris.
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Leeches usually feed for 20–40 minutes, then drop off. They cannot feed indefinitely on a single host.
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Salt can remove leeches but may cause regurgitation, increasing infection risk. Gentle removal methods are safer.
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Leeches are medically valuable, used in microsurgery, blood circulation improvement and ancient traditional medicine practices worldwide.
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