Reviving Traditional Treatment, Polish Company Breeds Leeches for Export Posted on 02/14/2018 by Cosc The use of blood-sucking leeches in treating disease may seem like a relic of the Middle Ages, but one Polish company says there is growing demand by doctors for the worms. Faith Lapidus reports. … Click to share on Telegram (Opens in new window)Click to share on WhatsApp (Opens in new window)Click to share on Pinterest (Opens in new window)Click to share on Facebook (Opens in new window)Click to share on X (Opens in new window)