A Weight Maintenance Program Promoting Fat Loss in Pregnancy in Women With Obesity

Inclusion Criteria: * Are pregnant less than or equal to 15 weeks gestation at screening * Have a body mass index between 31.0 and 55.0 inclusive * Have a confirmed viable singleton gestation * Willing to receive randomization to either group * Willing and able to eat the study foods * Willing to enroll infant for study measurements after birth * Receive clearance from the prenatal care provider for participation Exclusion Criteria: * Smoking, drug, or alcohol use * Have a known fetal anomaly * Have a non-pregnancy related illness * Have pre-existing diabetes * Have pre-existing hypertension * Have severe anemia * Have current mental health issue or eating disorder * Short inter-pregnancy interval (\<6 months since last pregnancy) * Use of assisted reproductive technology * Use of medications with known effects on body weight including over the counter medications and supplements for weight loss * History of pre-eclampsia, prior small for gestational age infant, bariatric surgery * Planning to move out of the area in the next 12 months