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Infant growth and breastfeeding patterns: The Japan Environment and Children's Study
Mie Mochizuki1, Hiroshi Yokomichi2, Emi Sawanobori1
1Department of Pediatrics, University of Yamanashi, Yamanashi, Japan.
Summary
Combination and formula feeding in Japanese infants show slower early growth followed by rapid catch-up growth. This pattern highlights the need for monitoring infant growth and tailored feeding support.
Area of Science:
- Pediatric Nutrition
- Infant Growth and Development
- Public Health
Background:
- Breastfeeding is optimal for infant nutrition and reduces metabolic risk.
- Rapid infant growth is linked to later adiposity and cardiometabolic issues.
- Limited data exists on Japanese infant growth and feeding patterns.
Purpose of the Study:
- To investigate infant growth patterns based on feeding type in Japan.
- To compare growth trajectories across breastfeeding, formula-feeding, and combination-feeding groups.
- To identify potential risks associated with different infant feeding practices.
Main Methods:
- Analysis of data from the Japan Environment and Children's Study cohort.
- Comparison of height, weight, and BMI at multiple time points (3-4 months to 3 years).
- Categorization of infants into breast-, combination-, and formula-feeding groups at 6 months.
Main Results:
- Breastfed infants exhibited rapid early growth and higher BMI, followed by slower growth.
- Combination-fed infants showed lower early measurements but significant catch-up growth from 8-12 months to 1 year.
- Formula-fed infants displayed slow initial growth followed by rapid catch-up growth.
Conclusions:
- Combination and formula feeding are associated with a catch-up growth pattern in Japanese infants.
- This catch-up growth warrants careful monitoring of infant development.
- Individualized feeding support is crucial for infants not exclusively breastfed.
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