What invertebrate was (and still occasionally is) applied to the human body as part of medical treatment for disease? Hint: You can't always trust the photos.
Leeches were commonly used by doctors as part of bloodletting treatment during the 17th, 18th and 19th centuries. They are still occasionally used today after plastic surgery such as reattachment of a lost finger to encourage blood flow.
Asked by Todd Curtis · Last updated 3 months ago · 43.1K views