Traditional healers of Southern Africa are practitioners of traditional African medicine in Southern Africa. They fulfill different social and political roles in the community, including divination, healing physical, emotional and spiritual illnesses, directing birth or death rituals, finding lost cattle, protecting warriors, counteracting witchcraft, and narrating the history, cosmology, and concepts of their tradition. There are two main types of traditional healers within the Nguni, Sotho-Tswana, and Tsonga societies of Southern Africa: the diviner ("sangoma"), and the herbalist ("inyanga"). These healers are effectively South African shamans who are highly revered and respected in a society where illness is thought to be caused by witchcraft, pollution (contact with impure objects or occurrences) or through neglect of the ancestors. It is estimated that there are as many as 200,000 traditional healers in South Africa compared to 25,000 doctors trained in bio-medical medicine. Traditional healers are consulted by approximately 60% of the South African population, usually in conjunction with modern biomedical services.