Nutrition
Eat less, but not less protein.
GLP-1 medications suppress appetite effectively enough that protein intake often falls without anyone noticing. Lean mass is what goes first.
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The science
Why protein becomes the variable to defend
01
Weight lost on any substantial calorie deficit comes from both fat and lean tissue. The proportion is not fixed: adequate protein intake combined with resistance training shifts more of the loss toward fat and preserves more muscle.
02
On a GLP-1 this becomes harder precisely because the medication works. Appetite suppression is the mechanism, but it suppresses appetite for everything, and protein tends to be the first casualty because it is the most filling macronutrient to eat.
03
Commonly cited targets run from roughly 1.2 grams per kilogram of body weight for someone sedentary to around 1.8 for someone training most days. The higher end applies when the goal is specifically to preserve lean mass during rapid loss.
04
Spreading intake across meals is usually easier than concentrating it. On days when suppression is heaviest, a liquid source counts: reaching the floor matters considerably more than where the protein came from, and a shake beats missing the target on principle.
FAQ
Common questions
How much protein should I eat on a GLP-1?
Commonly cited targets fall between 1.2 and 1.8 grams per kilogram of body weight per day, depending on activity. The higher end applies if you are resistance training and trying to preserve lean mass.
Why does protein matter more on a GLP-1?
Rapid weight loss draws on both fat and lean tissue. Adequate protein with resistance training shifts more of the loss toward fat. Because these medications suppress appetite, hitting the target takes deliberate planning.
What if I cannot eat enough on dose days?
Liquid sources are usually easier to tolerate when nausea is present. Hitting the floor with a shake is better than missing it on principle.
Is this medical or dietary advice?
No. It applies a standard multiplier to the figures you enter. Individual requirements vary, particularly with kidney conditions, and should be discussed with a clinician or dietitian.
Should I count protein in grams of food or grams of protein?
Grams of protein. A 100 gram chicken breast contains roughly 30 grams of protein, not 100. Reading labels by protein content rather than portion weight is the distinction that matters.
Does the target change as I lose weight?
Yes, because it is calculated from body weight. Recalculating every few kilograms keeps the floor accurate, though the change is gradual enough that monthly is usually sufficient.
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