Abstract: A monograph for pediatricians, clinical nutritionists, and other health care professional dealing with the role of nutrition in the perinatal development of infants presents the results of a longitudinal study covering the period from birth to 5 years of age of 205 full-term, single-birth infants of 2500 g birthweight or more, born in Perth, Australia. Data are presented on: the study population profile; feeding practices during infancy; eating patterns during infancy and childhood; longitudinal growth rate; the development of teeth and dental caries prevalence; and morbidity patterns. Data tabulations, graphs, and illustrations are given throughout the text, and literature references are appended.