Medicine men go wild. Part 3, Healthiest hearts.

The third 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 they travel to Eastern Siberia to a village called Chukotka where people have the lowest rate of heart attacks in the world. The brothers experience them hunting walruses and whales in order to amass enough food to survive the winter months.