The World Health Organization, the European Commission and scientific societies like the Spanish Pediatrics Association recommend, exclusive breastfeeding (EBF) during the first 6 months of infants' lives (Asociación Española de Pediatría [AEP], 2012; European Commission, 2007; World Health Organization [WHO], 2018). The Institute of Medicine (IOM) describes health literacy (HL) as the degree to which individuals have the capacity to obtain, process and understand the basic health information and services needed to make appropriate health decisions (Sorensen et al., 2013). Low or limited HL is related to less knowledge about socio-health services and increased morbi-mortality upon hospital discharge (Berkman et al., 2011; Office of Disease Prevention & Health Promotion, 2010).
| BACKG ROU N DThe benefits of breastfeeding (BF) for mother include reducing the risk of post-partum depression and suffering breast and ovarian cancer throughout life, among others, and reducing the risk of sudden death, allergies, asthma or leukaemia, among others, for newborns (Oribe et al., 2015;Van Dellen et al., 2019). In central and southern Europe, EBF prevalence in countries like Spain varies between