Low-carbohydrate diet for the treatment of gestational diabetes mellitus: a randomized controlled trial

Cristina Moreno-Castilla, Marta Hernandez, Merce Bergua, Maria C Alvarez, Maria A Arce, Karen Rodriguez, Montserrat Martinez-Alonso, Montserrat Iglesias, Magdalena Mateu, Maria D Santos, Linda R Pacheco, Yolanda Blasco, Eva Martin, Nuria Balsells, Nuria Aranda, Didac Mauricio, Cristina Moreno-Castilla, Marta Hernandez, Merce Bergua, Maria C Alvarez, Maria A Arce, Karen Rodriguez, Montserrat Martinez-Alonso, Montserrat Iglesias, Magdalena Mateu, Maria D Santos, Linda R Pacheco, Yolanda Blasco, Eva Martin, Nuria Balsells, Nuria Aranda, Didac Mauricio

Abstract

Objective: Medical nutrition therapy based on the control of the amount and distribution of carbohydrates (CHO) is the initial treatment for gestational diabetes mellitus (GDM), but there is a need for randomized controlled trials comparing different dietary strategies. The purpose of this study was to test the hypothesis that a low-CHO diet for the treatment of GDM would lead to a lower rate of insulin treatment with similar pregnancy outcomes compared with a control diet.

Research design and methods: A total of 152 women with GDM were included in this open, randomized controlled trial and assigned to follow either a diet with low-CHO content (40% of the total diet energy content as CHO) or a control diet (55% of the total diet energy content as CHO). CHO intake was assessed by 3-day food records. The main pregnancy outcomes were also assessed.

Results: The rate of women requiring insulin was not significantly different between the treatment groups (low CHO 54.7% vs. control 54.7%; P = 1). Daily food records confirmed a difference in the amount of CHO consumed between the groups (P = 0.0001). No differences were found in the obstetric and perinatal outcomes between the treatment groups.

Conclusions: Treatment of women with GDM using a low-CHO diet did not reduce the number of women needing insulin and produced similar pregnancy outcomes. In GDM, CHO amount (40 vs. 55% of calories) did not influence insulin need or pregnancy outcomes.

Trial registration: ClinicalTrials.gov NCT00911404.

Figures

Figure 1
Figure 1
Time to insulin treatment from study allocation in the two study groups.

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Source: PubMed

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