Inorganic constituents of breast milk from vegetarian and nonvegetarian XXXX : relationships with each other and with organic constituents.

@entity1 @entity219 @entity1372 @entity1132 @entity920 @entity460 @entity972 @entity68 @entity1760
Changes in concentrations of minerals, trace elements, protein, @entity1132 and total lipids during 20 mo of lactation and correlations between levels of these milk constituents were studied in a carefully defined set of 222 milk samples collected from 52 @entity1 , one-half of whom were vegetarians. Milk samples from vegetarians and those from nonvegetarians contained similar levels of @entity68 , @entity920 , @entity219 , @entity1372 , @entity972 , @entity460 , @entity1760 , @entity1132 and fat. Following a brief but sharp initial decrease, levels of protein and @entity68 did not change significantly between mo 2 and 20 of lactation. Levels of @entity219 , @entity920 , @entity1372 and @entity972 declined for the first 6 mo of lactation. Levels of lipid, @entity1372 and @entity219 increased during later months of lactation while that of @entity460 decreased. Levels of @entity1132 , @entity920 , @entity972 and @entity1760 remained unchanged during mo 7-20. Stepwise multiple regression analysis showed positive correlations between levels of three pairs of inorganic constituents during the first 6 mo of lactation: @entity920 and @entity219 , @entity920 and @entity972 , and @entity972 and @entity460 . During the subsequent 14 mo of lactation, @entity972 was correlated with @entity920 . The level of @entity68 was positively correlated with that of lipid, while that of @entity460 was negatively correlated with that of lipid. These relationships, and others reported in the paper, are discussed in relation to current hypotheses of the mechanism of milk secretion and the binding of inorganic to organic milk constituents.
