Mechanistic Nutrition and Food Formulation Strategies for GLP-1 Users: A Framework for Weight Maintenance and Appetite Stabilization

Abstract

Glucagon-like peptide-1 receptor agonists (GLP-1 RAs) have transformed obesity treatment by producing substantial weight loss and cardiometabolic benefits, yet many individuals regain a large portion of lost weight once therapy is reduced or discontinued. These drugs reshape multiple determinants of eating—hunger, hedonic drive, gastric emptying, food choice, and meal patterns—creating a growing population whose nutritional needs differ from standard dietary guidance and who are particularly vulnerable to appetite rebound and weight regain post-treatment. This narrative review integrates current evidence on GLP-1–induced changes in eating behavior and weight trajectories with established knowledge on nutrients, food structure, and appetite regulation. It examines the roles of protein quantity and quality, viscous and fermentable dietary fibers, hydrocolloids, resistant starch and low–glycemic index carbohydrate systems, dietary energy density, and metabolically supportive dietary patterns. These insights are translated into formulation strategies and product concepts—such as high-satiety beverages, low–energy-density meals, portion-controlled snacks, and glycemic-stabilizing cereal and bakery systems—designed to complement GLP-1 therapy and support weight maintenance after discontinuation. Given that GLP-1–specific nutrition and formulation trials are still scarce, many recommendations are extrapolated from broader obesity and satiety literature, and key evidence gaps are identified. The review provides a mechanistic and application-focused framework to guide food scientists, nutrition researchers, and product developers in creating GLP-1–aligned foods that are physiologically targeted, behaviorally sustainable, and suitable for both active users and former users seeking long-term weight and glycemic stability.