{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T14:36:25Z","timestamp":1790001385076,"version":"4.0.1"},"reference-count":26,"publisher":"Cambridge University Press (CUP)","issue":"3","license":[{"start":{"date-parts":[[2007,3,9]],"date-time":"2007-03-09T00:00:00Z","timestamp":1173398400000},"content-version":"unspecified","delay-in-days":9443,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Br J Nutr"],"published-print":{"date-parts":[[1981,5]]},"abstract":"<jats:p>1. Long-term variations in breast-milk fat concentration of mothers feeding on demand were studied in 120 rural West African women over a 12-month period.<\/jats:p><jats:p>2. The over-all mean 12 h breast-milk fat concentration was 39.3 g\/l.<\/jats:p><jats:p>3. Mean breast-milk fat concentrations were affected by season in a manner which was correlated with seasonal changes in maternal subcutaneous fat stores (<jats:italic>P<\/jats:italic>&gt; 0.05) but which was unrelated to seasonal variations in maternal energy intake and breast-milk output.<\/jats:p><jats:p>4. Breast-milk fat concentrations were highest in early lactation, decreasing to a constant level during the first year.<\/jats:p><jats:p>5. There was significantly greater between-mother than within-mother variation in breast-milk fat concentrations measured in successive months, after correcting for season and stage of lactation (<jats:italic>P<\/jats:italic>&gt; 0.001).<\/jats:p><jats:p>6. Breast-milk fat concentrations were highest for primiparous mothers, decreasing to a constant level at parity 4 and higher.<\/jats:p><jats:p>7. A mother's relative breast-milk fat concentration was not correlated with her levels of dietary energy intake and breast-milk output but was positively correlated with her relative subcutaneous fat deposits (<jats:italic>P<\/jats:italic>&gt; 0.01).<\/jats:p>","DOI":"10.1079\/bjn19810128","type":"journal-article","created":{"date-parts":[[2005,9,17]],"date-time":"2005-09-17T04:07:20Z","timestamp":1126930040000},"page":"495-503","source":"Crossref","is-referenced-by-count":63,"title":["Breast-milk fat concentrations of rural African women"],"prefix":"10.1017","volume":"45","author":[{"given":"Ann","family":"Prentice","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A. M.","family":"Prentice","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"R. G.","family":"Whitehead","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2007,3,9]]},"reference":[{"key":"S0007114581000615_ref012","first-page":"344","volume":"47","author":"Karmarkar","year":"1959","journal-title":"Ind. J. med. 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Long-term variations within a community"],"short-title":[],"issued":{"date-parts":[[1981,5]]},"references-count":26,"journal-issue":{"issue":"3","published-print":{"date-parts":[[1981,5]]}},"alternative-id":["S0007114581000615"],"URL":"https:\/\/doi.org\/10.1079\/bjn19810128","relation":{},"ISSN":["0007-1145","1475-2662"],"issn-type":[{"value":"0007-1145","type":"print"},{"value":"1475-2662","type":"electronic"}],"subject":[],"published":{"date-parts":[[1981,5]]}}}