Infants are vulnerable: their growth and their development depend largely on their nutritional status. It is important to propose for them an optimal food. The human milk is unquestionably the best choice for the infant. When breastfeeding is not possible, the choice of the milk is made among hundreds of formulas for infants. They are regulated by a European directive. The healthcare professionals have to recommend as often as possible an infant formula: low protein content, predominance of whey proteins, enrichment with long chain fatty acids, lactose, addition of pre- or probiotics. The formulas for specific indications will be recommended in case of particular situations after verification that the complaints (constipation, regurgitations, stomach pains) cannot be corrected by simple dietary measures (increasing of the intakes of meals with a concomitant reduction of the volume of the meals). The food diversification is recommended between 17 and 26 weeks according to the neuromuscular capacities of the infant. These meals must be presented with a spoon to assure a sufficient nutritional intake. In Belgium, the use is to begin with fruits. One should avoid adding biscuits or sugar. The meal of vegetables will be introduced a little later. It should consist of starchy foods, vegetables with some fat to which the meat will be added. Numerous foods (biscuits, croissants and similar products, chips) should never be part of the ordinary menu, but should be reserved for particular occasions. The education of the children should begin from this age on.