The rate of breastfeeding in mothers of infants born prematurely is lower than in mothers who give birth on time. A Danish survey shows that about 70% of premature are on exclusive breastfeeding at discharge and that this rate is decreasing to about 30% six weeks after discharge. Breastmilk is the healthiest nutrition for the newborn and based on WHO's strategy for the feeding of infants Board of Health recommends that newborn infants, including premature, as far as possible are exclusively breastfed for six months. Exclusively breastfeeding means that the infant only gets the breastmilk of the mother. Exclusively breastfeeding has health implications for both mother and infant. Breastfeeding reduces lactation incidence of infectious diseases, improves cognitive development and visual function in the infant and reduces the risk of developing later obesity. In addition, the level of immune protective factors and anti-inflammatory elements is high in the mother's milk to the preterm infant and therefore reduce the infant's increased risk of early and severe infections, and death late effects. Furthermore, breastfeeding may reduce the risk of premature infant's abnormal vessel growth in the eye, and appears to have a protective effect on the disease being of significant excess mortality primarily attack the intestines of the preterm infant (necrotizing enterocolitis).