Moreover, glucose tolerance, antidiabetic treatment, grade of overweight/obesity, and sex were important factors influencing GLP-1 secretion. The results presented in this review highlight the potential of nutritional and physiologic stimulation of GLP-1 secretion.
Abstract Glucagon-like peptide 1 (GLP-1), a gastrointestinal peptide and central mediator of glucose metabolism, is secreted by L cells in the intestine in response to food intake. Postprandial secretion of GLP-1 is triggered by nutrient-sensing via transporters and G-protein-coupled receptors (GPCRs). GLP-1 secretion may be lower in adults with obesity/overweight (OW) or type 2 diabetes ...

Furthermore, visual representations like the one above help us fully grasp the concept of Fasting Glucose Response To Glp-1 Treatment.
GLP-1 receptor agonists are a type of medication used to treat type 2 diabetes. They work by mimicking the action of the hormone GLP-1 (glucagon-like peptide-1), which is naturally produced in the intestines. GLP-1 helps regulate blood glucose levels by stimulating insulin secretion, suppressing glucagon release, and slowing down gastric emptying.

Fasting glucose dropped from 168 to 132 mg/dL within 3 weeks the most rapid glucose response Renee had seen in 6 years of medication management. Glipizide reduced from 5mg to 2.5mg in coordination with her PCP.
In terms of glucose response, tirzepatide improved glucose excursions similarly to semaglutide and a DPP-4 resistant GIP analog in mice lacking the GIPR or GLP-1R, respectively.