The objective of the questionnaire survey was to asses some, mainly pro-health nutritional behaviours of the 11-12 years old children, who were pupils in several, randomly drawn elementary schools in Białystok. Almost all the children regularly ate major meals, and half of them ate lunch. No variety was added to the majority of meals, and most of meals were wrongly combined. The high per cent rate of the children polled preferred fruit, vegetables, fruit juices, and yoghurts; this fact was reflected in a sneaking habit appearing characteristic for many of them. The frequency of consuming milk, milk products, dark bread, fish, vegetables, fruit, and vegetable oil was too low. Law-value products, such as fast food and sweets, were consumed too often. The children surveyed counted food advertising among the major sources of information, beside their family.