How Much Protein Do You Need on a GLP-1? A Simple Guide

Judith Ototo, RDN

Steak and Vegetables

If you're on a GLP-1 medicine, you've probably been told to eat more protein. But nobody gives you a real number. Let's fix that.

GLP-1 is the general term for this class of medicine — you may know it by a brand name instead, like Ozempic, Wegovy, Mounjaro, or Zepbound. Everything below applies no matter which one you're on.

Why I Bring This Up First with Every Client

When someone starts a GLP-1 in my practice, protein is the first thing we talk about. Not meal timing. Not supplements. Protein.

Here's why. Studies on GLP-1 medicines have found that a large share of the weight people lose is not fat. It's muscle. Different studies report different numbers, but many land in the range of 25% to 40% of total weight lost. That means for every 10 pounds someone loses, 2 to 4 pounds of it can be muscle, not fat.

Muscle loss isn't just about how your body looks. Muscle burns calories even when you're resting. It helps control blood sugar. It keeps you strong and steady as you get older. Losing a lot of it while losing weight isn't a fair trade.

I see this pattern often. A client is thrilled with the number on the scale. Then we look closer, and a big chunk of what they lost wasn't fat. That's not their fault. It happens because appetite drops fast on these medicines, and protein habits don't always catch up in time.

So, for every GLP-1 client, keeping muscle is the main goal I build the whole food plan around.

How Much Protein Do You Actually Need?

Most healthy adults are told to eat about 0.36 grams of protein per pound of body weight a day. That's the standard minimum.

But that number is too low if you're losing weight fast, especially on a GLP-1. Several nutrition sources now recommend closer to 0.5 to 0.7 grams per pound of body weight during weight loss, to help protect muscle. For a 180-pound person, that's about 90 to 125 grams a day.

That's a range, not a strict rule. Your age, how much weight you're losing, and your activity level can all shift the number. This is a starting point to talk through with your doctor or dietitian, not a fixed prescription.

Here's the hard part: hitting even the low end of that range gets tough when a GLP-1 has cut your appetite way down. That's where planning matters more than willpower.

Breaking It into Meals

Most people on a GLP-1 aren't eating three big meals anymore. It's more often two to four small ones. Nutrition research on muscle building suggests aiming for 25 to 40 grams of protein per meal, spread across three or four times a day. That's the number to build around.

A typical dinner-size portion of meat — around 5 to 7 ounces — usually lands somewhere in that 25-to-40-gram

range, depending on the cut. That's most of a meal's target from one serving.

Matching It to What's in Your Box

Knowing the target is one thing. Knowing what's actually in your freezer is another. Here's an example using a solo-dinner Restore & Rebuild Box — 8.5 pounds of meat portioned for one adult, about 5 to 7 ounces per dinner, covering roughly 23 to 24 dinners over 3 to 3.5 weeks.

Cut	Your Portion	Notes
Ground Beef (80/20)	5–6 oz	Everyday base — tacos, meatballs, sauce
Ancestral Blend (90/7/3)	5–6 oz	Same base as plain ground beef, plus B12, zinc, iron, and CoQ10 from the liver and heart folded in
Chicken Breast	5–6 oz	A leaner option, easy to dice or grill
Beef Shank (bone-in)	6–7 oz	Braises soft — easier to eat if a big portion feels like a lot
Stew Meat	5–6 oz	Zinc-rich, easy to fold into a stew if a plain portion feels like too much
Oxtail (bone-in)	4–5 oz	Rich and filling; pair with a side for a full meal
Bone Broth Bones	—	Not a protein serving on its own — simmer into broth and use as a cooking liquid for rice, ugali, or stews

Every cut on this list is a solid meal-sized protein serving at its stated portion. You don't need to weigh food or do math at the counter every night. Pick a cut, cook the portion in the guide, and you're close to where you need to be.

On low-appetite days, reach for the Ancestral Blend (90% Beef, 7% Beef Liver, 3% Beef Heart) or the shank first. They give you a full protein serving plus extra nutrients, which matters when you can only manage a small amount of food. On better days, rotate through the leaner cuts and stretch the oxtail and stew meat with sides.

What to Do If You're Falling Short

If you're consistently under target by the end of the week, try these in order:

1. Eat protein first. Put it on your plate first and eat it first, in case fullness cuts the meal short.

2. Don't skip the denser option. On a low-appetite day, a smaller portion of the Ancestral Blend or a braised cut like shank beats skipping the meal or grabbing something low in protein because it's easier to eat.

3. Check in weekly, not daily. One low day isn't a problem. A pattern of low days across a week is what actually affects muscle over time. That's the number worth tracking.

   
   

The Bottom Line

You don't need a perfect number every single day. What matters is the pattern over weeks. Pick a target that fits your body size, break it into portions you can actually manage in one sitting, and lean on denser cuts on the days your appetite won't cooperate.

I tell every client the same thing: the scale tells you weight is coming off. It doesn't tell you what kind. Protein is the one thing you control that decides whether that loss is mostly fat, or mostly the muscle you'll wish you had kept.

Ready to Build Your Protein Plan?

If you're on a GLP-1 and want a freezer full of meals sized and ready to hit your protein target without the guesswork, the Restore & Rebuild Box is built for exactly this. Every cut is pre-portioned, and the Ancestral Blend gives you extra nutrition on the days your appetite won't cooperate.

Explore Your Options

Not sure which box fits your goals? Book a consult with Judith and we'll build a plan around your target, your appetite, and what's actually in your freezer.

This article gives general nutrition information. It is not personal medical or dietetic advice. Talk with your doctor or registered dietitian about a protein target that fits your health and your treatment plan.