Breast milk dominant phyla and probiotic bacteria in the obese lactating women compared with normal weights.

The main purpose was to determine the abundance of dominant phyla, Bifidobacterium spp., and Lactobacillus in breast milk of obese mothers versus normal-weights in fourth month of lactation in Iranian population. Sixty health women at the fourth month of breastfeeding, aged 18-40 years, were included and categorized based on body mass index (BMI) to the obese (BMI ≥ 30 kg/m) and normal-weights (18.