Students in their second year of medical studies perceived nutritional deficiency as a possible health problem in rural Nigeria and conducted a survey to investigate and compare the nutritional and health status of three distinct groups of children (Bokos in Babana, Bokos in Marami, Fulani). The nutritional status of the children in the three study populations differed and seasonal change affected the one to four year old children among the Fulani more than the other 2 groups. An attempt was made to explain the results on the basis of environmental and socioeconomic differences among the groups. This account, more than just elaborating on figures and more than making indisputable statements, aims at showing how medical students, from their earliest studies, can learn from an apparent health problem of the community, how they can be messengers of data relevant to picture the local epidemiology (practical aspect) and how their findings can be used as self instructive teaching--learning material (educational aspect).