Leeches are still used in medicine—yes, really. Here's why.

Leech therapy: What does it feel like and does it work?

Misclassified for Centuries, Medicinal Leeches Found to Be Three Distinct Species

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See how leeches are being used to treat medical problems

How Leeches Made Their Comeback

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Curious Kids: why do leeches suck our blood?

Leeches Cure National Geographic

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Leeches and Maggots Are FDA-Approved and Still Used in Modern Medicine

The Leech's Journey, From Welsh Lab to American Hospitals - Atlas Obscura

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