The second in a four-part series which follows twin doctors, Chris and Xand van Tulleken, trained in tropical medicine as they travel the world to research and experience for themselves the roles of medicine, ritual and belief in traditional forms of healing. In this part the brothers travel to Asia. Firstly they go to Kuala Lumpar in Malaysia to look at how people there deal with what would be to a typical Westener, excruciating pain. Both brothers experience face and tongue piercings. They also travel to the Himalayas to meet a doctor who practises Tibetan medicine - a form of medicine which believes all illness begins in the mind.