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Associations Between Carbohydrate Intake Behaviours and Glycaemia in Gestational Diabetes: A Prospective
Roslyn Smith1,2, Renee Borg3, Vincent Wong1,4
1Diabetes and Endocrine Service, Liverpool Hospital, Sydney, NSW 2170, Australia.
Nutrients
|February 13, 2025
Summary
Carbohydrate intake (CI) management in gestational diabetes differs for elevated fasting glycaemia (EFG) versus elevated postprandial glycaemia (EPG). EFG is linked to lower CI behaviors, while EPG is associated with high-glycaemic index meals.
Area of Science:
- Nutritional Science
- Endocrinology
- Maternal Health
Background:
- Carbohydrate intake (CI) significantly impacts short-term blood glucose levels.
- Optimal CI management strategies for gestational diabetes mellitus (GDM) are not well-defined.
- Understanding CI patterns is crucial for managing GDM effectively.
Purpose of the Study:
- To investigate carbohydrate intake behaviors in individuals newly diagnosed with gestational diabetes.
- To analyze the association between CI patterns and self-monitored blood glucose levels.
- To identify distinct CI profiles related to elevated fasting glycaemia (EFG) and elevated postprandial glycaemia (EPG).
Main Methods:
- Collected data from 97 individuals using food and blood glucose diaries over 5-8 days.
- Manually assessed CI (amount, type, timing) using 15g servings.
- Utilized a 3-day computerized analysis for broader macronutrient and micronutrient intake evaluation.
Main Results:
- EFG was associated with lower total CI, missed meals/snacks, fewer low-carbohydrate meals, and higher fat intake.
- EPG was not significantly linked to total CI or specific low/high carbohydrate meal/snack loads.
- EPG was associated with high-glycaemic index meals and lower overall energy, protein, fat, and micronutrient intake.
Conclusions:
- Carbohydrate intake profiles differ significantly between EFG and EPG in gestational diabetes.
- Dietary guidelines for GDM should be tailored to specific glycemic profiles (EFG vs. EPG).
- Further research, including interventional studies, is needed to explore the link between EFG and low CI behaviors.
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