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Breast Milk Macronutrient Components in Prolonged Lactation

Human milk (HM) is the first dietary exposure in infancy and the best nutritional option for growth and healthy development of the newborn and infant. The concentrations of macronutrients, namely proteins, carbohydrates and lipids, change during lactation stages. HM has been studied extensively in t...

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Autores principales: Czosnykowska-Łukacka, Matylda, Królak-Olejnik, Barbara, Orczyk-Pawiłowicz, Magdalena
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316538/
https://www.ncbi.nlm.nih.gov/pubmed/30513944
http://dx.doi.org/10.3390/nu10121893
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author Czosnykowska-Łukacka, Matylda
Królak-Olejnik, Barbara
Orczyk-Pawiłowicz, Magdalena
author_facet Czosnykowska-Łukacka, Matylda
Królak-Olejnik, Barbara
Orczyk-Pawiłowicz, Magdalena
author_sort Czosnykowska-Łukacka, Matylda
collection PubMed
description Human milk (HM) is the first dietary exposure in infancy and the best nutritional option for growth and healthy development of the newborn and infant. The concentrations of macronutrients, namely proteins, carbohydrates and lipids, change during lactation stages. HM has been studied extensively in the first 6 months of lactation, but there are limited data regarding milk composition beyond 1 or 2 years postpartum. The aim of our study was to describe longitudinal changes in HM macronutrient concentrations during the prolonged lactation of healthy mothers from the 1st to the 48th month. For the macronutrient content of milk of mothers breastfeeding for longer than 18 months, fat and protein increased and carbohydrates decreased significantly, compared with milk expressed by women breastfeeding up to 12 months. Moreover, the concentration of fat, protein and carbohydrates in HM over 2 years of lactation from the 24th to the 48th month remained at a stable level. However, analyzed macronutrients were positively (carbohydrate, r = 0.51) or negatively (fat, r = −0.36 and protein, r = −0.58) correlated with the amount of feeding. Our results create a greater potential for understanding the nutritional contribution of HM over 2 years of lactation and showed that the source of calories in breast milk for older children is mainly fat, while carbohydrates play a greater role in infant nutrition in the early stage. The observed changes of macronutrient concentrations from the 1st to the 48th month of lactation are probably related to the adaptation of milk composition to the increased energy demand of the intensively growing child.
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spelling pubmed-63165382019-01-08 Breast Milk Macronutrient Components in Prolonged Lactation Czosnykowska-Łukacka, Matylda Królak-Olejnik, Barbara Orczyk-Pawiłowicz, Magdalena Nutrients Article Human milk (HM) is the first dietary exposure in infancy and the best nutritional option for growth and healthy development of the newborn and infant. The concentrations of macronutrients, namely proteins, carbohydrates and lipids, change during lactation stages. HM has been studied extensively in the first 6 months of lactation, but there are limited data regarding milk composition beyond 1 or 2 years postpartum. The aim of our study was to describe longitudinal changes in HM macronutrient concentrations during the prolonged lactation of healthy mothers from the 1st to the 48th month. For the macronutrient content of milk of mothers breastfeeding for longer than 18 months, fat and protein increased and carbohydrates decreased significantly, compared with milk expressed by women breastfeeding up to 12 months. Moreover, the concentration of fat, protein and carbohydrates in HM over 2 years of lactation from the 24th to the 48th month remained at a stable level. However, analyzed macronutrients were positively (carbohydrate, r = 0.51) or negatively (fat, r = −0.36 and protein, r = −0.58) correlated with the amount of feeding. Our results create a greater potential for understanding the nutritional contribution of HM over 2 years of lactation and showed that the source of calories in breast milk for older children is mainly fat, while carbohydrates play a greater role in infant nutrition in the early stage. The observed changes of macronutrient concentrations from the 1st to the 48th month of lactation are probably related to the adaptation of milk composition to the increased energy demand of the intensively growing child. MDPI 2018-12-03 /pmc/articles/PMC6316538/ /pubmed/30513944 http://dx.doi.org/10.3390/nu10121893 Text en © 2018 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Czosnykowska-Łukacka, Matylda
Królak-Olejnik, Barbara
Orczyk-Pawiłowicz, Magdalena
Breast Milk Macronutrient Components in Prolonged Lactation
title Breast Milk Macronutrient Components in Prolonged Lactation
title_full Breast Milk Macronutrient Components in Prolonged Lactation
title_fullStr Breast Milk Macronutrient Components in Prolonged Lactation
title_full_unstemmed Breast Milk Macronutrient Components in Prolonged Lactation
title_short Breast Milk Macronutrient Components in Prolonged Lactation
title_sort breast milk macronutrient components in prolonged lactation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6316538/
https://www.ncbi.nlm.nih.gov/pubmed/30513944
http://dx.doi.org/10.3390/nu10121893
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