Electrolyte profile of Malaysian mothers' milk.

The influence of socioeconomic status (ethnicity, income, and parity) on electrolyte composition (sodium and potassium) in human milk is little known. The authors have thus quantitatively analyzed approximately 700 samples of milk (1-90 days postpartum) obtained from healthy Malaysian mothers (Malay, Chinese, and Indians) of full-term infants. Results show that the mean concentration (mmol/1) of sodium is highest 48.