Gynecologists strongly recommend mothers to breastfeed their babies at least 1 year as breast milk is the best food for the infants. Breastfeeding is also proven to beneficial for mothers in many ways. Here’s another reason why you should breastfeed your baby. A new study has revealed that lactation can lower the incidence and reduce the risk of maternal postpartum diabetes. The study by a team of South Korean researchers found that lactation increases the mass and function of insulin-secreting pancreatic beta cells through serotonin production. Serotonin act as an antioxidant and reduce oxidative stress making mothers' beta cells healthier.