RecruitingDietary supplementEffect of Fiber Supplementation on the Need for Medication With Gestational DiabetesThe hypotheses to be tested are 1) Fiber supplementation will decrease the need for medication in patients with gestational diabetes, and 2) Fiber supplementation will decrease adverse maternal and neonatal outcomes in these patients. In this study, the investigators will conduct a randomized controlled trial to limit bias in evaluating these hypotheses.