Background. Statements about the availability of selected foods ("functiona
l foods") to reduce the risk of diseases still continue to polarise opinion
s. If functional food is offered to infants and:toddlers, its safety and ef
ficacy have to be established Breast-feeding is the best example for functi
onal nutrition during the 1 st year of life; Additions to infant food. Prob
iotics health-promoting bacteria - added to formula are effective for the p
revention and treatment of diarrhoea. Moreover, they act as an anticonstipa
tion factor and reduce the incidence of diaper rash. Prebiotics - oligosacc
harides,which promote growth of health-promoting bacteria in the gut - adde
d to infant cereals are helpful in reducing the incidence of fever, a ny co
ld symptoms, runny nose, and severity of diarrhoea. Consumption of prebioti
cs before, during,and after measles vaccination resulted in a higher IgG me
asles antibody titre 6 weeks after vaccination.
Conclusion. Further studies with pro- and prebiotics in small children in d
eveloping and developed countries are necessary to elucidate the influence
on health and the cellular and humoral immune status.