A brief infection with a parasite like hookworm is painful and itchy, but it can be more serious for people chronically exposed. A number of infected people may not show symptoms, but according to ...

In this short film Dr Michael Mosley investigates hookworms - large parasites which invade our immune system. The worms have co-evolved with us to secrete chemicals which alter our immune system ...

He meets a sufferer of Crohn’s disease who infected himself with hookworms to reduce his symptoms. Infested by leeches. videoInfested by leeches In this short film Dr Michael Mosley interviews a ...