Related Experiment Video
Updated: Sep 10, 2025

Mechanisms Underlying Gut Hormone Secretion Using the Isolated Perfused Rat Small Intestine
Published on: February 26, 2019
Diet quality and nutrient distribution while using glucagon-like-peptide-1 receptor agonist: A secondary
Brittany V B Johnson1, Mary Milstead1, Lauren Green1
1GNC Holdings, LLC, 75 Hooper Place, Pittsburgh, PA, 15222, USA.
Background:
With the rise of glucagon-like-peptide-1 receptor agonist medications (GLP-1RA) for obesity treatment, understanding diet quality can be a valuable tool for providing evidence-based nutrition guidance. However, there is limited data on dietary intake during GLP-1RA treatment. Thus, we analyzed diet quality and nutrient timing while using GLP-1RA.
Methods:
This was a secondary analysis from a previous cross-sectional online survey questionnaire study involving adults currently using GLP-1RA for weight reduction (N = 69, 49.6 ± 12.3 years old, 35.9 ± 9.1 kg/m2). Three-day food records were analyzed using the Healthy Eating Index (HEI), a validated score that indicates overall diet quality. The 13 HEI components were scored from average 3-day food records and calculated using 95 % confidence intervals (CI). A Bonferroni correction applied significance accepted at p = 0.0038. Additionally, 95 % CI were calculated for calories, macronutrients, and fiber intake reported for breakfast, lunch, dinner, and snacks.
Results:
A 95 % CI revealed a total HEI score of 54 ± 12 (51.4, 57.3), significantly below the HEI goal (p < 0.0038). All components, except added sugars, were significantly under the max score. There was no significant difference for HEI scores based on duration of GLP-1RA use. The largest number of calories were consumed at dinner, averaging 649 compared to 538, 392, and 391 calories at lunch, breakfast, and snacks, respectively. Further, 40 % of the total daily protein intake occurred at dinnertime.
Conclusion:
Within the sample of patients using GLP-1RAs, dietary quality was suboptimal for fruits, vegetables, whole grains, seafood and plant proteins, dairy and fatty acids. Future research is needed to determine if HEI scores change before, during, and after GLP-1RA treatments and nutrient timing.
More Related Videos
09:16Mixed Primary Cultures of Murine Small Intestine Intended for the Study of Gut Hormone Secretion and Live Cell Imaging of Enteroendocrine Cells
Published on: April 20, 2017
08:13Study of In Vivo Glucose Metabolism in High-fat Diet-fed Mice Using Oral Glucose Tolerance Test OGTT and Insulin Tolerance Test ITT
Published on: January 7, 2018
Related Concept Videos
Glucagon-like Receptor Agonists
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
Hypoglycemia and Glucagon
Insulin: Dosing Regimen and Adverse Effects
The basal dose constitutes about 40%-50% of the total daily dose, with the rest as premeal insulin. The mealtime insulin dose should mirror...
Hormones Regulating Blood Glucose
In addition to accelerating glucose uptake and utilization, insulin has...
Oral Hypoglycemic Agents: Glinides
Glucose Homeostasis: Pancreatic Islets and Insulin Secretion
Insulin and C-peptide are...