Exclusive breastfeeding duration and infant infection

Area of Science:

• Pediatrics
• Public Health
• Epidemiology

Background:

• Exclusive breastfeeding (EBF) duration is a key factor in infant health.
• Understanding infection risks associated with varying EBF durations is crucial for public health policy.
• Previous research has indicated benefits of EBF, but specific risks related to duration require further investigation.

Purpose of the Study:

• To estimate the risk of infant infections (chest, diarrhoeal, ear) associated with different durations of exclusive breastfeeding (EBF).
• To compare infection risks between infants adhering to pre-2001 and post-2001 World Health Organization (WHO) breastfeeding policies.

Main Methods:

• Analysis of data from 15,809 term, singleton infants in the UK Millennium Cohort Study.
• Infants categorized by EBF duration: never, <2, 2-4, 4-6, and ≥6 months.
• Specific subgroup analysis for infants EBF for 4-6 months who introduced solids/formula before 6 months.

Main Results:

• EBF was not associated with ear infections.
• EBF for <4 months significantly increased the risk of chest infections and diarrhoea.
• Infants EBF for 4-6 months but stopping by 6 months showed an increased risk of chest infection and diarrhoea.
• No significant difference in infection risk between pre-2001 and post-2001 WHO policy groups.

Conclusions:

• Infants exclusively breastfed for less than 4 months or those stopping by 6 months face an elevated risk of infection.
• Findings support current WHO guidelines recommending EBF for 4-6 months or 6 months, followed by continued breastfeeding.
• Optimizing EBF duration is essential for reducing infant morbidity.