Chapter 16: Newborn Nutrition

The chapter details the composition of breast milk, which consists primarily of water alongside lactose, proteins, fats, vitamins, minerals, and hormones essential for infant development, particularly the lipid content critical for neurological maturation. The physiological mechanisms of lactation involve prolactin stimulation of milk production and oxytocin triggering the milk ejection reflex, with the transition from hormonally-driven early lactogenesis to demand-based autocrine control as infants nurse. Breast milk progresses through distinct stages—colostrum with its high immunoglobulin content and laxative properties, transitional milk with increasing caloric density, and mature milk providing balanced nutrition. The chapter emphasizes practical lactation support strategies including immediate skin-to-skin contact to stabilize infant temperature and glucose while promoting maternal hormone release, recognition of hunger cues to enable responsive feeding, and proper positioning techniques such as football and cross-cradle holds to facilitate effective latch. Assessment tools like the LATCH scoring system help healthcare providers evaluate breastfeeding effectiveness across multiple dimensions including latch quality, audible swallowing, nipple characteristics, maternal comfort, and infant positioning. The chapter addresses common lactation complications such as nipple trauma resulting from suboptimal latch, mastitis requiring antibiotic intervention, and breast engorgement requiring expression or pumping. Additionally, the chapter covers milk expression and storage guidelines, formula feeding as an acceptable alternative with specific preparation and safety requirements, and the developmental readiness indicators for introducing complementary foods at approximately six months of age while preventing dental complications through appropriate bottle use practices.