RIVM performed a systematic literature review of epidemiological studies on the health effects of breastfeeding. It is an update of previous reports on the health effects of breastfeeding from 2005 and 2007. Most of the reported health effects were already reported back then. New is the finding that breastfeeding might have a protective effect on hypertension among mothers. The probable protective effect of breastfeeding on eczema in children could not be confirmed.