Introduction of solids and formula to breastfed infants: a longitudinal prospective study in Uppsala, Sweden.
The introduction of solids and formula was studied among 506 breastfed infants in Uppsala, Sweden, based on daily recordings during the first year. The mothers had previously breastfed at least 1 infant for at least 4 mo. Thirty-four per cent of the infants were introduced to solids before the age of 4 mo (4-6 mo is recommended in Sweden). Accustoming the infants to solids was a lengthy process. Life-table analyses showed a median duration of 28 d from the first introduction of solids to consumption of >10 ml daily, and 46 d before the infants ate > or = 100 ml of solids in 1 d for the first time. These durations were longer the younger the infant was at the introduction of solids. Thirty-two per cent of infants given formula consumed > or = 100 ml the first time it was given, and 49% did so within I wk, regardless of infant age.


CONCLUSIONS
Parents and healthcare personnel need to be aware that accustoming breastfed infants to solid food is a lengthy process, and that there is a strong age effect on this duration. It is also important to consider what consequences the (usually) more abrupt introduction of formula might have on breastfeeding.
Hörnell
A
A
Section for International Maternal and Child Health, Department of Women's and Children's Health, Uppsala University, Sweden.
Hofvander
Y
Y
Kylberg
E
E
D001942:Breast Feeding; D016009:Chi-Square Distribution; D005260:Female; D006801:Humans; D007223:Infant; D007225:Infant Food; D007227:Infant Nutritional Physiological Phenomena; D015993:Life Tables; D008137:Longitudinal Studies; D008297:Male; D016016:Proportional Hazards Models; D011446:Prospective Studies; D018709:Statistics, Nonparametric; D013548:Sweden; D014886:Weaning