[Free amino acids in plasma and milk of mexican rural lactating women].

Objective: To determine the free amino acid pool in plasma and milk in Mexican rural lactating women.

Methods: Twenty-eight women with an age 24 +/- 5.0 (+/- SD) years, weight 50 +/- 4.

Significance of lipid consumption during lactation.

Human milk lipids are the main source of energy to support optimum growth of the breast-fed infant. The content and composition of milk lipids come from three main sources of fatty acids: the diet, mobilization of body fat stores and fatty acid synthesis de novo by the mammary gland. On account of these, the consumption and composition of the lipids from the diet and also the nutritional state, specifically the body fat percentage of the lactating woman, are elements that maintain a close relation with the content and composition of milk lipids which translates into the energy content given to the baby.