Vol. II · ii Body composition 2 min read
How Much Protein Should You Eat on a GLP-1?
Appetite suppression is indiscriminate. It cuts protein as readily as it cuts anything else.
On a GLP-1 you will eat less, and appetite suppression does not choose what you cut. Left alone, most people reduce protein first, because it is the least appealing thing on a small plate. That is the mechanism behind lean-mass loss on an otherwise successful protocol, and the fix is to set a floor in grams and hit it before anything else.
Why protein is the first thing to go
Appetite suppression is indiscriminate. It reduces how much you want to eat without any regard for what your body most needs from the reduced amount.
Protein is dense, filling and slow, which makes it the least attractive option when capacity is limited. Carbohydrate and fat are easier to eat in small volumes, so intake quietly shifts away from the one macronutrient that protects lean tissue.
Why a floor, and why in grams
We set the target in grams rather than as a percentage of intake, because a percentage of a shrinking intake is itself a shrinking number. As total food falls, a percentage target silently reduces the thing it was supposed to protect.
A fixed gram floor does not move when your appetite does. Your provider sets the specific figure at review, based on body composition and what the protocol is trying to preserve.
Set a floor, and hit it before anything else on the plate.
Hitting it when you are not hungry
Front-load. Protein at the first meal is far easier to reach than protein at the last one, after appetite has been suppressed all day. Most people who miss their floor miss it in the evening.
Eat the protein portion first, before anything else on the plate. Liquid sources are useful when solid food is unappealing, because they bypass much of the volume problem. And plan the day's protein rather than hoping the day supplies it.
What it is protecting
Any sustained deficit costs some lean mass. The question is proportion, and protein intake is one of the three things that decide it, alongside rate of loss and resistance training.
Lean tissue is metabolically active, so losing more of it than necessary makes the maintenance phase harder and makes regain easier. Protein is the cheapest of the three inputs to get right, and the one most often neglected.
Common questions
How much protein should I eat on a GLP-1?
Your provider sets a specific gram target at review, based on your body composition and goals. The principle is a fixed floor in grams rather than a percentage of intake, because a percentage shrinks as your appetite does.
What if I cannot eat that much?
Front-load it to earlier in the day, eat the protein portion first, and use liquid sources when solid food is unappealing. If the floor is still unreachable, tell your provider u2014 it may indicate the dose is ahead of what you can currently support.
Does protein help with the nausea?
Very large or very fatty meals tend to worsen gastrointestinal effects, so smaller and more frequent protein-forward meals are usually better tolerated than a single large one. This is worth raising at review rather than solving alone.
Educational — not medical advice.