Fatty acid composition in the mature milk of Bolivian forager-horticulturalists: controlled comparisons with a US sample.
Matern Child Nutr
; 8(3): 404-18, 2012 Jul.
Article
em En
| MEDLINE
| ID: mdl-22624983
Breast milk fatty acid (FA) composition varies greatly among individual women, including in percentages of the long-chain polyunsaturated FAs (LCPUFA) 20:4n-6 (arachidonic acid, AA) and 22:6n-3 (docosahexaenoic acid, DHA), which are important for infant neurological development. It has been suggested that owing to wide variation in milk LCPUFA and low DHA in Western diets, standards of milk FA composition should be derived from populations consuming traditional diets. We collected breast milk samples from Tsimane women at varying lactational stages (6-82 weeks). The Tsimane are an indigenous, natural fertility, subsistence-level population living in Amazonia Bolivia. Tsimane samples were matched by lactational stage to samples from a US milk bank, and analysed concurrently for FA composition by gas-liquid chromatography. We compared milk FA composition between Tsimane (n = 35) and US (n = 35) mothers, focusing on differences in LCPUFA percentages that may be due to population-typical dietary patterns. Per total FAs, the percentages of AA, DHA, total n-3 and total n-6 LCPUFA were significantly higher among Tsimane mothers. Mean percentages of 18:2n-6 (linoleic acid) and trans FAs were significantly higher among US mothers. Tsimane mothers' higher milk n-3 and n-6 LCPUFA percentages may be due to their regular consumption of wild game and freshwater fish, as well as comparatively lower intakes of processed foods and oils that may interfere with LCPUFA synthesis.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Lactação
/
Estado Nutricional
/
Fenômenos Fisiológicos da Nutrição Materna
/
Ácidos Graxos
/
Leite Humano
Limite:
Adolescent
/
Adult
/
Female
/
Humans
/
Middle aged
País/Região como assunto:
America do norte
/
America do sul
/
Bolivia
Idioma:
En
Revista:
Matern Child Nutr
Assunto da revista:
CIENCIAS DA NUTRICAO
/
PERINATOLOGIA
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Estados Unidos
País de publicação:
Reino Unido