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Abstract

Changes to Breast Milk Composition following Increased Maternal Sugar and Fat Consumption †

1
Commonwealth Scientific and Industrial Research Organisation (CSIRO), Adelaide 5000, Australia
2
School of Biosciences, University of Nottingham, Loughborough LE12 5RD, UK
3
School of Agriculture, Food and Wine, University of Adelaide, Adelaide 5064, Australia
4
Women and Kids Theme, South Australian Health and Medical Research Institute (SAHMRI), Adelaide 5000, Australia
*
Author to whom correspondence should be addressed.
Presented at the More Than Just Milk Lactation Science Symposium, Perth, Australia, 25 November 2022.
Proceedings 2023, 84(1), 7; https://doi.org/10.3390/proceedings2023084007
Published: 14 February 2023
(This article belongs to the Proceedings of More Than Just Milk Lactation Science Symposium)

Abstract

:
Human milk is influenced by maternal habitual diet, yet we do not fully understand the short-term effects of dietary variations on breast milk macronutrient concentrations. This study aimed to determine if increasing sugar and fat consumption would impact breast milk protein, lactose and lipids. Nine mothers who were exclusively breast-feeding consumed three diets; a control, a higher fat diet and a higher sugar diet at least 1 week apart. Breast milk samples were collected hourly and analysed for concentrations of protein, lactose, triglycerides and cholesterol. Breast milk triglycerides responded to both intervention diets with significantly higher concentrations in comparison to the control diet (p < 0.001). Cholesterol concentrations increased more in response to the higher sugar diet than the higher fat diet (p < 0.005). Lactose concentrations increased in response to the higher fat diet (p = 0.006), and protein decreased in response to the higher fat diet (p = 0.05). Variations in breast milk composition were observed over the day with triglyceride and cholesterol concentrations highest at the end of day (p < 0.001), and lactose and protein concentrations peaking at hour 10 (p < 0.001). Manipulating maternal consumption of fat and sugar impacted concentrations of human milk triglycerides, cholesterol, lactose and protein. Fluctuations were also seen in milk macronutrients in response to time of day.

Author Contributions

Conceptualization, E.W., B.S.M., M.J.E., M.J.N., G.E.L., and S.C.L.-E., methodology, E.W., and N.Y.; investigation, E.W.; data curation, E.W., and N.Y.; writing, E.W., B.S.M., M.J.E., and S.C.L.-E. All authors have read and agreed to the published version of the manuscript.

Funding

The research was funded by the University of Nottingham-University of Adelaide joint PhD programme.

Institutional Review Board Statement

The study was conducted in accordance with the Declaration of Helsinki, and approved by the Faculty of Medicine & Health Sciences Research Ethics Committee of The University of Nottingham (protocol code 191-1901, 14 February 2019).

Informed Consent Statement

Informed consent was obtained from all subjects involved in the study.

Data Availability Statement

Data from this study will be archived in the University of Nottingham Repository (https://nottingham-repository.worktribe.com) on the completion of EW's PhD studies following the 4 January 2024 and will also be available through the University of Nottingham eTheses database (https://eprints.nottingham.ac.uk/etheses/).

Conflicts of Interest

The authors declare no conflict of interest.
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Share and Cite

MDPI and ACS Style

Ward, E.; Yang, N.; Muhlhausler, B.S.; Leghi, G.E.; Netting, M.J.; Elmes, M.J.; Langley-Evans, S.C. Changes to Breast Milk Composition following Increased Maternal Sugar and Fat Consumption. Proceedings 2023, 84, 7. https://doi.org/10.3390/proceedings2023084007

AMA Style

Ward E, Yang N, Muhlhausler BS, Leghi GE, Netting MJ, Elmes MJ, Langley-Evans SC. Changes to Breast Milk Composition following Increased Maternal Sugar and Fat Consumption. Proceedings. 2023; 84(1):7. https://doi.org/10.3390/proceedings2023084007

Chicago/Turabian Style

Ward, Ellen, Ni Yang, Beverly S. Muhlhausler, Gabriela E. Leghi, Merryn J. Netting, Matthew J. Elmes, and Simon C. Langley-Evans. 2023. "Changes to Breast Milk Composition following Increased Maternal Sugar and Fat Consumption" Proceedings 84, no. 1: 7. https://doi.org/10.3390/proceedings2023084007

APA Style

Ward, E., Yang, N., Muhlhausler, B. S., Leghi, G. E., Netting, M. J., Elmes, M. J., & Langley-Evans, S. C. (2023). Changes to Breast Milk Composition following Increased Maternal Sugar and Fat Consumption. Proceedings, 84(1), 7. https://doi.org/10.3390/proceedings2023084007

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