Fiber

What Should You Eat While Taking a GLP-1?

Written by Golp Editorial Team Sourced from FDA, USDA, NIH, and peer-reviewed US research Updated August 2026 1 min read

Short answer

A joint US clinical advisory recommends prioritizing protein and fiber-rich foods, managing digestive side effects, and preserving muscle mass through diet and resistance training while on a GLP-1 medication. There's no single required meal plan, the priorities apply within whatever foods you're already eating.

Why it matters

Appetite and food preferences often shift meaningfully on a GLP-1 medication. Without some intentional structure, it's easy for overall nutrition quality to slip even while eating less successfully.

What the evidence says

The joint advisory from the American College of Lifestyle Medicine, American Society for Nutrition, Obesity Medicine Association, and The Obesity Society, published in the American Journal of Clinical Nutrition, identifies several nutritional priorities during GLP-1 therapy: preventing nutrient deficiencies, preserving muscle and bone mass through diet and resistance training, and managing gastrointestinal side effects through food choices.

The golp take

The advice isn't complicated, protein, fiber, and consistency, but it's easy to miss when you're just trying to get through a meal that doesn't sit well. Simple is the point.

What to do

  • Prioritize protein sources at meals, per the joint advisory's muscle-preservation guidance
  • Build in fiber-rich foods intentionally, since smaller meals often mean less fiber by default
  • If digestive side effects are an issue, smaller and more frequent meals are commonly discussed in the advisory's framework
  • Pair diet changes with resistance training where possible, per the advisory's muscle and bone preservation guidance
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Related questions

Sources

  1. Mozaffarian D, Agarwal M, Aggarwal M, et al. Nutritional priorities to support GLP-1 therapy for obesity: a joint Advisory from ACLM, ASN, OMA, and TOS. Am J Clin Nutr. 2025;122(2):344-367.

FAQs

Is there one specific diet recommended?

No single prescribed diet; the advisory outlines priorities (protein, fiber, side effect management, muscle preservation) rather than a fixed meal plan.

Does this apply to everyone on a GLP-1?

The advisory addresses general priorities for GLP-1 therapy; individual needs vary and should be discussed with a healthcare provider.

Should I change my diet before starting a GLP-1 or after?

A healthcare provider or dietitian can advise on timing based on your specific treatment plan.