Nutrition Guide
Eating Less Means Eating Smarter
GLP-1s reduce your appetite. That's the point. The catch: every bite now matters more, because you have fewer of them. Most people undereat protein and develop deficiencies they don't catch until labs reveal them. This guide closes that gap.
The Stakes (Why This Matters)
If you don't dial in nutrition, you may lose the wrong kind of weight and develop deficiencies that affect energy, sleep, and long-term health.
of weight lost on GLP-1s can be lean muscle
Without enough protein and resistance training, you lose what you're trying to keep.
develop nutritional deficiencies in 6 months
By 12 months, that rises to ~13.6%. Iron, B12, Vitamin D, magnesium are common.
small meals beat 1-2 large ones
GLP-1s slow gastric emptying. Smaller, denser meals are easier to tolerate.
1. Hit Your Protein Target
Protein is the single most important macronutrient on a GLP-1. It preserves lean muscle, satiates better than carbs or fat, and protects metabolic rate as you lose weight.
Target: 0.8 - 1.0g per pound of goal body weight
For most people that's 100-180g of protein per day. That sounds like a lot, especially when your appetite is suppressed. Tactics:
- • Protein-first ordering: eat the protein on your plate first, before carbs or fats fill you up
- • Liquid protein helps: shakes are easier to get down when solid food feels too much
- • Spread across meals: 30-40g per meal × 3-4 meals hits the target without overwhelming any single sitting
- • Convenient sources: Greek yogurt, cottage cheese, eggs, chicken, fish, lean beef, whey/casein, tofu, tempeh
2. Mind Your Micronutrients
Eating less means consuming fewer total nutrients. Some deficiencies show up faster than others. These are the ones to monitor and supplement preemptively.
Vitamin D
Common deficiency at any weight; gets worse with reduced food intake.
Action: 2,000-5,000 IU/day. Test levels quarterly.
B12
Especially important if you reduce meat/dairy intake. Affects energy and mood.
Action: Methylcobalamin 1,000mcg/day or sublingual.
Iron / Ferritin
Most relevant for menstruating women. Affects energy and exercise capacity.
Action: Test before supplementing — too much is harmful.
Magnesium
Affects sleep, muscle cramps, mood. Often low on calorie restriction.
Action: 300-400mg/day glycinate or citrate.
Calcium
Often consumed via dairy; if you cut dairy, you cut calcium.
Action: Get from food first (yogurt, leafy greens). Supplement only if low.
Thiamine (B1)
Less commonly discussed but matters — especially if calorie intake is very low.
Action: A B-complex usually covers it.
3. Meal Planning When You're Not Hungry
GLP-1s slow gastric emptying. Big meals feel heavy. Greasy meals can trigger nausea. Here's how to eat for the changed experience.
Smaller, denser, more often.
3-4 meals or substantial snacks instead of 1-2 large meals. Each one ~30-40g protein, ~300-500 calories.
Hydrate between meals, not during.
Drinking with meals fills you up faster and reduces what you can eat. Sip water 30 min before/after.
Avoid greasy / very fatty meals.
Slow gastric emptying + high fat = nausea. Lean proteins and moderate fats are easier to tolerate.
Time meals around your dose.
For weekly injections, the day after dosing is usually when appetite is most suppressed. Plan lighter, more liquid meals that day.
Lift weights.
Resistance training is the only thing besides protein that signals your body to keep muscle. 2-3x/week is enough. This isn't optional if you care about preserving lean mass.
4. GLP-1-Friendly Meal Ideas
High protein, dense calories, easy to tolerate. Each ~30-40g protein.
Greek yogurt parfait
2 cups 0% Greek yogurt + 1 scoop whey + berries + chia seeds. ~50g protein.
Eggs + cottage cheese
3 eggs + 1 cup cottage cheese + spinach. ~40g protein.
Chicken + quinoa bowl
5oz grilled chicken + ½ cup quinoa + roasted veg + olive oil. ~45g protein.
Salmon + sweet potato
5oz salmon + small sweet potato + steamed broccoli. ~35g protein, omega-3s.
Protein smoothie
2 scoops whey + 1 cup milk + frozen banana + peanut butter. ~50g protein. Easy when you can't face solid food.
Tuna + crackers
2 cans tuna + Greek yogurt (instead of mayo) + whole-grain crackers. ~40g protein.
Let Your Labs Tell You What to Adjust
Generic nutrition advice can only take you so far. Your bloodwork tells you what your body specifically needs more or less of. That's why testing is the foundation of the closed loop.
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