To date, the limited studies conducted in this area have found that breastfeed-ing is associated with increased sleep disturbances but no studies have assessed sleep over time. Thus, the aim of this study was to assess the relationship between breastfeeding and sleep in a prospective longitudinal study of infants. Based on
previous research, it was hypothesized that (1) breastfeeding would be associ-ated with sleep disruption, (2) parental presence would moderate the relationship between breastfeeding and sleep, and (3) breastfeeding would not be associated
with long-term sleep disruption