A new study published in Pediatrics found that breastfeeding infants for any duration during their first three months reduces the risk of childhood obesity, regardless of the mother’s pre-pregnancy body mass index (BMI). While previous research has suggested that breastfeeding may help protect against obesity, this study specifically focused on women with obesity or overweight before pregnancy. The researchers aimed to explore how breastfeeding might affect a child’s BMIz score, a measure that compares a child’s weight and height to those of their peers.