An attempt has been made to identify suitable indicators to monitor changes in nutritional status of population by using NNMB database from 1975 to 1980. Conventional indicators in this regard are nutrient intakes, clinical status and growth, particularly of children. Examination of the data revealed that average energy intake at household as well as that of preschoolers could be used for assessing changes overtime. One of the reliable indicators of nutritional status appears to be distribution of children according to body weight deficits rather than clinical deficiency signs. Based on these indicators, the results of the analysis suggested that in the 10 states where NNMB is operating, there has been an increase in average consumption of calories as well as improvement in body weight status of preschool children.