Turkish preschool children in Stockholm, Sweden, 59 born 1979, 32 born 1976 and 43 siblings of preschool age have been studied as to nutritional status including anthropometric parameters, dental caries, haemoglobin level and bacteriological and parasitological findings in faeces and as to deaths of siblings in Turkey and Sweden. Growth was very close to that of the Swedish standard. Two of three children with slightly subnormal growth had had recent direct or indirect contact with the home country. There were no signs of nutritional deficiency but dental caries was common. There was little anaemia. One case of shigellosis was found. Mortality of infancy was significantly reduced after immigration. The group had made a successful nutritional adaptation in Sweden considering their origin in regions of Turkey with a high prevalence of growth failure. Health care in this group should aim at prevention of diarrhoeal disease on visits to Turkey as well as of dental caries.