The yield and nutrient content of colostrum and milk of women giving birth to 1 month post-partum. Lactating women breast milk for professionals Healthcare Company. What other factors Lactating women breast milk be considered when examining the effects of maternal nutrition on milk volume? The women also reported fewer gastrointestinal and respiratory illnesses after food supplementation. The size of the baby at birth and the yield of breast milk. A number of other hormones, such as oestrogen, are involved indirectly in lactation 2.