Breast Milk Sugars: Gut & Brain Health After 12 Months

Summary of ⁤Breast Milk HMO Composition Study

This text summarizes a study analyzing the composition of Human Milk‍ Oligosaccharides (HMOs) in breast milk at different time points: colostrum (early milk), 6 months postpartum, and ⁤12 months postpartum. Here’s a breakdown of the key findings:

Methods:

The study analyzed data from 13 eligible studies, encompassing 4,786 samples and 42 unique HMOs.
LC-MS (Liquid Chromatography wiht Mass Spectrometry) was used for analysis, indicating a refined ⁤and accurate method for identifying and quantifying the different hmos.key Findings:

Six “Core” HMOs: ⁢Six HMOs – 2′-FL, ⁣3-FL, LNT, LNnT, 3′-SL, and 6′-SL – were consistently analyzed⁣ across many studies and represent over 70% of the total HMO pool. These were used for simplified comparisons.
2′-FL Dominance: 2′-FL was the ⁢most abundant HMO at all‍ time points (averaging 3.00 g/L in colostrum and 1.59 g/L ‍at 12 months).
Dynamic 3-FL: Unlike the general downward trend of HMOs, 3-FL increased nearly fourfold from colostrum (0.38 g/L) to 12⁢ months (1.45⁣ g/L), suggesting ⁣increased fucosylation (addition of fucose sugars) later in lactation.
Decline of Other HMOs: LNT and LNnT decreased significantly from colostrum to 12 months. 6′-SL showed a sharp decline,‍ while 3′-SL remained relatively stable.
Overall⁢ HMO Decrease: Total HMO concentration decreased from 7.72⁢ g/L in colostrum to 5.34 g/L at 12 months. Data beyond 12 months ⁢is limited,but suggests a possible plateau,though caution is advised due to small sample sizes.
Persistence Beyond 1 Year: Limited data suggests HMOs persist beyond one year, with some studies tracking changes ‍monthly for 17 months and quantifying individual structures at 18 and 24 months.

In essence, the study provides a extensive overview of HMO composition changes during the frist ⁢year of ⁣lactation, highlighting the dynamic nature of these important components of breast ⁤milk. the image provided visually represents ⁤the relative abundance of the six core HMOs at each time point.