Repast for GLP-1 Patients: Protecting Muscle Mass on Semaglutide & Tirzepatide
The nutritional arithmetic of securing an unyielding 1.8g/kg protein floor when appetite suppression destroys your hunger signals.
The Friction vs. The Constraint Solver
The Sarcopenic Muscle Wasting Trap
Clinical trials like STEP-1 prove that 25% to 40% of weight lost on GLP-1 agonists is lean muscle tissue, not fat. When appetite drops by 60%, patients instinctively under-eat protein.
Early Satiety with High-Fat Foods
GLP-1 medications delay gastric emptying. Eating traditional high-fat keto foods causes premature fullness before the patient hits their vital daily protein floor.
Protein-First Constraint Modeling
Repast inverts traditional keto planning by locking in your 1.8g/kg protein floor first, using dietary fats strictly as an adjustable lever to hit caloric targets without volume bloat.
Leucine-Threshold Meal Anchoring
Rather than ineffective 10g protein grazing, Repast structures two dense meals delivering 35g+ bioavailable protein to breach the 3g leucine threshold and ignite muscle protein synthesis.
Verified Persona Meal Architecture
USDA-AuditedA concrete day generated by Repast for this exact metabolic profile, with guaranteed sub-20g net carbs and zero food logging required.
The Clinical Reality of GLP-1 Weight Loss
Semaglutide and tirzepatide have revolutionized obesity medicine by mimicking incretin hormones, delaying gastric motility, and activating hypothalamic satiety centers.
However, Dual-Energy X-ray Absorptiometry (DXA) sub-studies from major clinical trials reveal that up to 39% of total lost mass is fat-free skeletal muscle.
Skeletal muscle is the single largest site for postprandial glucose disposal and the primary determinant of resting metabolic rate (RMR). When patients cease GLP-1 therapy after losing significant muscle, their lowered RMR virtually guarantees rapid fat rebound.
“Appetite suppression without an unyielding protein floor causes up to 40% lean skeletal muscle loss.”
Breaching the Leucine Threshold Twice Daily
Muscle Protein Synthesis (MPS) is an all-or-nothing intracellular switch governed by mTORC1. To trigger MPS in human skeletal tissue, circulating levels of the essential branched-chain amino acid leucine must reach approximately 2.5g to 3.0g within a 90-minute postprandial window.
A patient who grazes on four 10-gram protein snacks throughout the day never hits this threshold. MPS remains dormant while whole-body protein breakdown continues.
Repast concentrates your daily protein into two structured meals providing at least 35g of complete protein each, ensuring MPS is fully ignited twice daily even in a severe caloric deficit.
Inverting the Macro Sequence for Low Hunger
Because GLP-1 slows stomach emptying, bulky high-fat meals cause severe discomfort and sulfur burps.
Repast organizes your plate in a strict physiological hierarchy: consume the lean animal protein first, non-starchy vegetables second, and dietary fats only as necessary to meet basic energy targets.
This guarantees that even if early fullness strikes mid-meal, 100% of your critical amino acid floor has already been ingested.
Frequently Asked Questions
How does Repast calculate my specific protein floor on GLP-1?
Repast utilizes your target lean body mass (LBM) rather than total scale weight, enforcing a minimum of 1.6g to 2.2g of protein per kilogram of LBM to protect skeletal muscle.
Can I use Repast if I suffer from GLP-1 medication nausea?
Yes. Repast includes low-volume, easily digestible protein templates (such as cold poached poultry, flaked white fish, and egg white scrambles) that bypass nausea-inducing heavy cooking fats.
Protect your skeletal muscle while taking GLP-1s.
Repast locks in an unyielding 1.8g/kg protein floor on your iPhone before calculating single-digit net carbs, keeping your metabolic rate high.
Protect muscle on iPhone