Breast milk has a high nutrient content and has shown numerous benefits, such as a reduced risk of otitis media, gastroenteritis, respiratory illness, sudden infant death syndrome, necrotizing enterocolitis, obesity, and hypertension.34 The sugar found in milk—lactose—is not fermented to the same degree as other sugars.2 Additionally, it may be less cariogenic because the phosphoproteins in milk inhibit enamel dissolution and the antibacterial factors in milk may interfere with growth of cariogenic oral microbial flora.2 Hallett et al42 reported that prevalence and severity of ECC decreased with an increased duration of breastfeeding up to 12 months of age compared with not breastfeeding at all.