Episode

BrainStuff

HowStuffWorks

Science & Medicine, Natural Sciences, Society & Culture, Technology

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Top 200 171

Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

What is a medical leech?

July 13th, 2009

Episode 322 of 1127 episodes

Medical leeches are raised in captivity and help patients heal wounds. Discover how leeches and other parasites are used for medical purposes in this podcast from HowStuffWorks.com.

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