This is really interesting!

In a U.S. study, early safety tests suggested the eggs of pig whipworms have anti-inflammatory properties, reducing the size of brain lesions in MS patients. A similar trial is under way in Denmark. And in Britain, academics at the University of Nottingham are studying the potential health benefits of hookworms, another type of parasitic worm.

If these trials prove successful, treatment with parasitic worms—known as helminthic therapy—could provide a simple, cheap, natural and controllable treatment for the debilitating condition, which affects 2.5 million people world-wide.