Infant intake of fatty acids from human milk over the first year of lactation
MetadataShow full item record
Despite the importance of human milk fatty acids for infant growth and development, there are few reports describing infant intakes of individual fatty acids. We have measured volume, fat content and fatty acid composition of milk from each breast at each feed over a 24h period to determine the mean daily amounts of each fatty acid delivered to the infant from breast milk at 1, 2, 4, 6, 9 and 12 months of lactation in five women. Daily (24h) milk production was 336·60 (sem 26·21) and 414·49 (sem 28·39) ml and milk fat content was 36·06 (sem 1·37) and 34·97 (sem 1·50) g/l for left and right breasts respectively over the course of the first year of lactation. Fatty acid composition varied over the course of the day (mean CV 14·3 (sd 7·7) %), but did not follow a circadian rhythm. The proportions (g/100g total fatty acids) of fatty acids differed significantly between mothers (P<0·05) and over the first year of lactation (P<0·05). However, amounts (g) of most fatty acids delivered to the infant over 24h did not differ during the first year of lactation and only the amounts of 18:3n-3, 22:5n-3 and 22:6n-3 delivered differed between mothers (P<0·05). Mean amounts of 18:2n-6, 18:3n-3, 20:4n-6 and 22:6n-3 delivered to the infant per 24h over the first year of lactation were 2·380 (sd 0·980), 0·194 (sd 0·074), 0·093 (sd 0·031) and 0·049 (sd 0·021) g respectively. These results suggest that variation in proportions of fatty acids may not translate to variation in the amount delivered and that milk production and fat content need to be considered.
Showing items related by title, author, creator and subject.
Variation in fat lactose and protein in human milk over 24h and throughout the first year of lactationMitoulas, L.; Sherriff, Jillian (2002)Fat in human milk is extremely variable and can represent up to 50 % of infant energy intake. To accurately determine milk composition and infant intake at 1 (n 17), 2 (n 17), 4 (n 17), 6 (n 15), 9 (n 6) and 12 (n 5) ...
Infant nutrition and maternal obesity influence the risk of non-alcoholic fatty liver disease in adolescentsAyonrinde, Oyekoya; Oddy, W.; Adams, L.; Mori, T.; Beilin, L.; de Klerk, N.; Olynyk, John (2016)BACKGROUND & AIMS: The pathway to non-alcoholic fatty liver disease (NAFLD) in adolescents may have its origins in adiposity gains, nutrition and sedentary lifestyle established during childhood. There is inadequate ...
Lee, M.; Binns, Colin; Zhao, Yun; Scott, J.; Oddy, W. (2012)Women who are breastfeeding have increased requirements for energy and nutrients. Nutritional requirements for lactation have been the subject of several international reports and are included in general nutrient requirements ...