Gestational diabetes & diabetes in pregnancy

Gestational Diabetes, the Human Milk Metabolome, and Infant Growth and Adiposity

JAMA Netw OpenPublished Prospective cohort study

An erratum to this article was published (JAMA Netw Open, 2 Jan 2025 ↗)

Authors' conclusion

In this observational cohort study, GD was associated with altered concentrations of several human milk metabolites. The associations between these metabolites and infant growth suggest that milk compositional differences in mothers with GD may beneficially moderate the growth and body composition of their infants.

Study context

Population
Mother-infant dyads planning to exclusively breastfeed ≥3 months, recruited October 2014–August 2019, University of Oklahoma and University of Minnesota (US)
Participants
348 mother-infant dyads
Exposure
Gestational diabetes (GD) vs no GD
  • GDn = 53
Outcome
Human milk metabolome (untargeted liquid chromatography-gas chromatography-mass spectrometry); infant growth and body composition
Follow-up
1 month post partum (metabolome); 0 to 6 months (infant outcomes)
Methodological detailsobservational, multicentre, Data analyzed July 2022 to August 2024
  • Observational
  • Multicentre
  • Data analyzed July 2022 to August 2024

Main finding

As reported in the abstract

Milk metabolites associated with GD (adjusted) · 1 month post partum

Metabolites differentially associated with GD (FDR<0.05)

9 of 458 tested

Lower in women with GD: 4-cresyl sulfate, cresol, glycine, P-cresol sulfate, phenylacetic acid, stearoylcarnitine

6

Observational data: associations, not effects.

Further findings

Maternal age

Outcomeβ (95% CI)
Length for age z scoreSE, 0.22; greater with GD0.48 (0.04–0.91)

Phenylacetic acid and length for age z score

β
0.27
SE
0.13
95% CI
0.02 to 0.16

2-hydroxybutyric acid and percentage body fat

β
−1.50
SE
0.66
95% CI
−2.79 to −4.82

Stearoylcarnitine and greater odds of rapid weight gain

OR
1.66
95% CI
1.23 to 2.25

Original publication

Gestational Diabetes, the Human Milk Metabolome, and Infant Growth and Adiposity. JAMA Netw Open. Published 2 December 2024. doi:10.1001/jamanetworkopen.2024.50467

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