Measures of timing of solid food introduction were self-report, as in other studies in this area.
There is a still a need for clarification about the optimal timing of solid food introduction and the food types to be offered at different stages of weaning.
Because infants' first foods tend to be cereals, fruits, and vegetables, which are core foods, studies of the timing of solid food introduction usually reflect introduction of core foods.
Huh et al. [ 6] found that the timing of solid food was not associated with obesity at the age of three years among breastfed infants, whereas among formula feed infants introduction of solid food before four months was associated with a six-fold increase in the risk of obesity at the age of three years.
This study showed a high level of non-compliance among Australian mothers with the infant feeding recommendation related to the timing of solids that was current at the time.
Unlike earlier studies we found no independent association between the timing of solids and parity [ 30, 31], maternal level of education [ 27, 28, 30] and mothers in this study were no more likely to introduce solids earlier to boys than girls [ 21, 23, 28].
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The timing of when solid foods should be introduced to infants, and which foods should be introduced and when, are contentious issues which appear to cause confusion for parents and professionals alike.
However, while there is evidence linking health outcomes to the timing of general solid food introduction, few studies have focused on specific food groups, so it is unclear whether the health effects relate to core foods, non-core foods, or both.
