They were more popular in earlier times because it was widely thought that most diseases were caused by an excess of blood. As recently as the 19th century, leeches were used to treat everything from tonsillitis to hemorrhoids.
Leeches have been used in medicine for over 2,500 years. They were more popular in earlier times because it was widely thought that most diseases were caused by an excess of blood. As recently as the 19th century, leeches were used to treat everything from tonsillitis to hemorrhoids.
