Content fat and calorie of human milk is affected by interactions between maternal age and body mass index.

AbstractPurpose: We evaluated the association between macronutrients of human milk (HM), and interactions between maternal age and body mass index(BMI) in matched conditions.Material and methods: Totally, 80 HM samples were collected from healthy breast-feeding mothers at fourth week of lactation. HM macronutrients and maternal data were analyzed. Mothers were subgrouped into four groups by maternal age (20 s/30 s) and BMI (overweight/normal).Results: Two-way ANOVA revealed significant interactions between age and BMI to affect macronutrients; fat, carbohydrate, and calories. Moreover, different responses of fat and calorie to BMI were found in different age groups.Conclusions: The evaluation of over- or under-weighted infants warrants considering both of maternal age and BMI.