Breastfeeding is the nourishment designed by nature for newborns and infants; however, its prevalence is nowadays not optimal. The aim of this article is to review the current evidence of the benefits of breastfeeding for children and society and to elaborate the risks associated with replacing breast milk with baby formulas. Breastfeeding has been shown to be a protective factor for several infectious, atopic and cardiovascular diseases as well as for leukemia, necrotizing enterocolitis, celiac disease, and inflammatory bowel disease. It also has a positive impact on neurodevelopment, improving IQ, reducing the risk of attention deficit disorder, and generalized developmental and behavioral disorders. Lactation can decrease the risk of sudden infant deaths syndrome by 36% and prevent 13% of infant mortality worldwide. Breastfeeding result in direct saving on the use of infant formulas and bottles, as well as indirectly on associated health costs, premature deaths, and qualityadjusted life years, among others. In addition, breastfeeding is environmentally friendly; it does not leave an ecological footprint in its production and consumption. The use of baby formulas and bottles have inherent risks, because they increase the risk of oral diseases, such as mouth breathing, malocclusion, alteration of bite, and tooth decay. Finally, the intestinal microbiota, oxygenation, and thermoregulation of infants are negatively affected by their use.