Timing of solid food introduction is associated with urinary F2-isoprostane concentrations in childhood

Area of Science:

• Pediatric Nutrition
• Oxidative Stress Biomarkers
• Chronic Disease Prevention

Background:

• Infant feeding practices, including the timing of solid food introduction, are linked to chronic disease development.
• Oxidative stress, indicated by F2-isoprostanes, is a potential mechanism underlying these associations.

Purpose of the Study:

• To investigate the relationship between the timing of solid food introduction and breastfeeding at introduction with F2-isoprostane concentrations in healthy children.
• To explore potential long-term effects on oxidative stress markers.

Main Methods:

• Urinary F2-isoprostane concentrations were measured in 336 children under 11.5 years old.
• Data were analyzed using linear mixed models, adjusting for various covariates including genetics and environmental factors.
• Associations between infant diet and F2-isoprostane levels were examined across multiple clinic visits per child.

Main Results:

• Later introduction of solid foods was significantly associated with lower childhood F2-isoprostane concentrations.
• Breastfeeding at the time of solid food introduction was also linked to reduced F2-isoprostane levels.
• These associations remained significant even when analyzing data from 2 years of age onwards.

Conclusions:

• Later solid food introduction in infancy offers a protective effect against elevated F2-isoprostane concentrations.
• Breastfeeding during the introduction of solids also demonstrates a protective role against oxidative stress throughout childhood.
• These findings suggest that infant feeding strategies can influence long-term oxidative stress levels.