A Swedish study has investigated whether the timing of introducing complementary foods during infancy is associated with the risk of food allergies later in childhood. The study found that children who were introduced to meat earlier during their first year of life were less likely to be diagnosed with food allergies by the age of six.

What did the researchers investigate?

Researchers analysed data from the Swedish NICE birth cohort, following hundreds of children from infancy through to six years of age. Their aim was to understand whether the timing of introducing different foods during a baby’s first year could influence the risk of developing food allergies, eczema or allergic asthma later in childhood.

The study included 462 children with detailed dietary information. During the first year of life, parents completed monthly questionnaires about breastfeeding, formula feeding and the introduction of various foods, including meat, fish, eggs, dairy products, fruits, potatoes, bread, porridge and other complementary foods.

When the children reached six years of age, they were assessed by a paediatric allergy specialist, with food allergy diagnoses confirmed using standard clinical assessment and food-challenge testing where appropriate.

What did the study find?

The most notable finding was that children who were introduced to meat earlier had a lower likelihood of developing food allergies by age six.

Researchers found that:

• Earlier meat introduction was associated with a 24% lower risk of food allergy.
• The association remained statistically significant after adjusting for potential confounding factors.
• The association became even stronger when children who already had food allergies at age one were excluded from the analysis.

By age six, the prevalence of allergic conditions in the study group was:

• 3.7% had food allergies
• 16% had atopic eczema
• 12% had allergic asthma

What about eczema and asthma?

Interestingly, the timing of introducing foods during infancy did not appear to influence the risk of developing eczema or allergic asthma.

While researchers observed some associations with foods such as eggs and margarine, these findings were less consistent after accounting for factors such as family history of allergies and existing allergies in infancy.

What does this mean?

The findings suggest that introducing meat earlier in infancy may be linked to a lower risk of food allergy later in childhood. However, this was an observational study, meaning it can identify associations but cannot prove that earlier meat introduction directly prevents food allergies.

Every child is different, and feeding decisions should always be made in consultation with qualified healthcare professionals and according to relevant infant-feeding guidelines.

As researchers continue to investigate the relationship between nutrition and immune development, studies like this help improve our understanding of how early dietary choices may influence long-term health outcomes.