What to eat on a GLP-1 medicine: a sourced food list

How to read this list

Every item comes from one of the eating pages and the sources they cite, so each can be traced. Three kinds of evidence are kept apart. Trial evidence comes from randomized trials. Expert guidance comes mainly from a 2025 joint advisory by the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association and The Obesity Society, and from a 2023 expert consensus. Community experience is what large numbers of people report online, and nobody checked it.

The Atlas found no randomized trial that tested a specific food, drink or meal pattern against nothing in people taking semaglutide or tirzepatide. The big medicine trials paired the drug with a reduced-calorie diet and counseling. So nothing below is a proven fix. This page is a map of what is named and by whom.

The short version

• Quality and variety: the advisory emphasizes fruit, vegetables, whole grains, legumes, lean proteins, nuts and seeds, and minimally processed foods.
• When appetite is small: small, frequent meals. Smoothies, protein drinks, cottage cheese and soups are described as often more appealing than heavier foods.
• When nausea shows up: smaller meals, little fatty or high-fiber food in the first days of treatment, and ginger or peppermint tea. The advisory names these. Trials did not test them.
• Protein and fluids matter more when you eat less. The advisory gives reference amounts for protein, which have not been tested as targets in people on these medicines. The sources the Atlas read set no daily fluid target.
• Alcohol: the advisory says it may worsen nausea and reflux and should be minimized.

Foods and drinks that sources name, by situation

This summarizes what the sources name. It is not a meal plan, and the community column is not evidence that anything works.

Foods the advisory says to limit

The 2025 advisory advises limiting refined carbohydrates, sugar-sweetened beverages, red and processed meat, most fast food, and ultra-processed sweets and savory snacks. For people with a history of kidney stones it advises avoiding high-oxalate foods, highly processed foods and animal-source proteins. For nausea, the advisory and community reports both single out fatty or greasy food, and the advisory says foods high in protein, fat or fiber slow the stomach and may need to be cut back for a while.

These are positions in a guidance document. They were not tested in trials of people taking these medicines.

Three popular eating styles, side by side

The advisory does not tell people to follow one named diet. It says many dietary patterns have been used with success, and that sticking with the pattern and attending counseling visits are often what decide results.

Muscle, protein and exercise

People lose some lean mass, which includes muscle, water, bone and organs, along with fat. A 2022 review of whey protein trials in postmenopausal women found that protein added to resistance training improved lean mass and strength, while protein without resistance training did not make a significant difference. It was not tested in people on these medicines. The advisory says structured strength training is the type of exercise best established to help preserve lean mass. The exercise page, the protein page and the page on protecting muscle cover the details.

Who should get a plan from a clinician or dietitian first

• Anyone with kidney disease or a history of kidney stones, who may need limits on protein, minerals or supplements.
• Anyone with diabetes who uses insulin or a sulfonylurea, since eating less, fasting, low-carb eating and alcohol can all change blood sugar.
• Anyone with a history of disordered eating, or a history of pancreatitis or gallbladder disease.
• Anyone vomiting, with diarrhea or unable to keep fluids down. Both labels warn that dehydration can lead to acute kidney injury.
• Anyone eating very little for days, who should tell the prescriber rather than push through.

The eating pages, in one list

• Protein: how much experts have proposed, shakes, and what is untested.
• Nausea and fullness: what the trials counted and what experts suggest.
• Constipation: how common it is and what is on the expert list.
• Hydration: fluids, dehydration and the kidney warning on both labels.
• Eating enough: nutrient gaps when appetite is very small.
• Alcohol: what experts say, and the early trial on drinking.
• Exercise and strength training: the year-long trial and what experts say about muscle.
• Low-carb and keto, intermittent fasting and Mediterranean-style eating: trials, experts and community reports for each.
• Eating after you stop: regain after stopping and what is untested.

Quick answers

What should I eat on Wegovy or Zepbound?

Neither the Atlas nor the labels can give you a meal plan. The 2025 joint advisory emphasizes varied, minimally processed foods, enough protein and fluid, and small frequent meals when appetite is low. A registered dietitian who knows your history can turn that into a plan.

What foods help with nausea on a GLP-1 medicine?

The advisory suggests smaller, more frequent meals, little fatty or high-fiber food in the first days of treatment, and ginger or peppermint tea. Community members add crackers or similar bland food and cutting greasy and fried food. No trial the Atlas found tested a specific food for nausea in people on these medicines.

Is there a GLP-1 diet?

No single diet has been shown to be best with these medicines. The advisory says many dietary patterns have been used with success and that sticking with one matters.

How much protein do I need?

The protein page lists the reference amounts the advisory gives. They are proposals, they have not been tested as targets in people on these medicines, and the right body weight to use is unsettled. A dietitian can set a number for you.

Should I avoid fatty food?

The advisory suggests avoiding fatty or high-fiber foods for the first few days of treatment to ease nausea, and notes that high-fat foods slow the stomach. It does not say they must be avoided permanently, and no trial tested it.

Do I need electrolytes or supplements?

The Atlas found no trial or guideline recommending electrolyte supplements for people on these medicines. The advisory says supplements for at-risk nutrients such as vitamin D, calcium and B12 can be considered for each person. Ask a clinician first, especially with kidney disease.

Is keto or fasting better than other ways of eating on these medicines?

Not shown. Trials of keto and fasting in general found little or no difference in weight loss compared with ordinary diets, and none tested them in people on these medicines. People with diabetes need medical supervision before combining either with a GLP-1 medicine.

What if I am barely hungry?

The advisory suggests small, frequent meals, smoothies, cottage cheese and soups, and an alarm or reminder to eat. If you are eating very little for days, tell your prescriber.

Questions to ask

• Can you refer me to a registered dietitian who works with people on GLP-1 medicines?
• How much protein and fluid make sense for my kidneys, my other medicines and my appetite?
• Do my diabetes or blood pressure medicines need to change if I eat less or change how I eat?
• Which nutrient levels, such as vitamin D or B12, should we check?
• Which symptoms mean I should call you instead of trying a food change?

What is still unknown

• The Atlas found no randomized trial that tested a specific food, drink or meal pattern against nothing in people taking semaglutide or tirzepatide.
• Most of the practical food tips here are expert opinion or community experience.
• No source the Atlas read sets a daily fluid target for these medicines.
• Whether protein supplements or electrolyte products help beyond ordinary food is untested.
• Which eating style is best for people on these medicines, if any, is not settled.
• Community reports come from people who chose to post, so they lean toward success stories.