Pediatric Obesity and the Infant Microbiome (BEACH)

Inclusion Criteria: * Between the ages of 18 and 45 years of age. * Pre-pregnancy BMI is greater than 30 kg/m2 * Pre-pregnancy BMI is less than 25 kg/m2 * At risk for gestational diabetes * Pregnant and have Type 1 diabetes (T1D) * Pregnant and have Type 2 diabetes (T2D) * pregnant and within the 3rd trimester (34-36 weeks of gestation)-You plan to deliver in the Greater Gainesville area * Plan to deliver via vaginal or cesarean section * Plan to exclusively breastfeed your infant for at least 2 months * Child will receive their pediatric care through UFHealth Exclusion Criteria: * Smoking * Pre-eclampsia * History of pre-term delivery (\<35 weeks) * Only one breast capable of lactation and milk production inadequate * Age \<18 yrs, \>45 yrs * Any maternal antibiotics in the last 2 weeks during delivery * Any alcohol consumption * Drug use