Gestational diabetes mellitus (GDM) is a common condition affecting pregnant women, characterized by impaired glucose tolerance. To manage GDM, medical nutrition therapy (MNT) plays a crucial role. MNT involves nutritional counseling and dietary modifications, which effectively regulate blood sugar levels, improve insulin sensitivity, and reduce the risk of adverse pregnancy outcomes. This therapy emphasizes a balanced diet with specific recommendations for carbohydrate, protein, and fat intake, as well as essential vitamin and mineral supplementation.