Nutritional guidance through digital media for glycemic control of women with gestational diabetes mellitus: a randomized clinical trial

Objectives: To compare the effectiveness of outpatient nutritional guidance supplemented by digital media with exclusively standard outpatient nutritional guidance in pregnant women with gestational diabetes mellitus (GDM). Methods: This was a randomized, patient-blinded clinical trial conducted at the Diabetes and Pregnancy outpatient clinic from February 2021 to January 2023. Pregnant women with GDM were randomly allocated into two groups: the control group received exclusively outpatient nutritional guidance, and the Intervention Group received outpatient nutritional guidance along with reminders via WhatsApp. Dietary intake (calories, carbohydrates, lipids, proteins, and fibers) was evaluated using 24 h dietary recalls. Glycemic control and the need for pharmacological treatment were also assessed. Results: A total of 81 women were included, 34 allocated to the control group, and 47 to the intervention group. Patients were followed for a period of 4-8 weeks. Significant differences were observed in some points of glycemic control between the two groups over the follow-up period. There were no statistical differences in pharmacological therapy (p=0.498); 188 24 h dietary recall were conducted in the control group and 290 in the intervention group. A statistically significant increase in lipid intake was observed in the intervention group over the follow-up period compared to the control group (p<0.001). No changes in calorie intake, other macronutrients, or fiber consumption were noted. Conclusions: Glycemic control was significantly improved with the addition of frequent text reminders about dietary choices, and a significant increase in lipid intake was seen in all women, more so in the reminder group.