Starting a GLP-1 medication such as semaglutide or tirzepatide can be an important step toward improving your metabolic health before pregnancy. These medications can reduce appetite and help you feel full sooner and for longer. But eating less is only part of the picture.
Our goal is not simply to help you lose weight. We want to help you:
- Lose primarily body fat while preserving muscle
- Nourish your body even when your appetite is lower
- Improve metabolic health
- Build strength and healthy habits
- Support your overall reproductive health
- Prepare your body for a healthy future pregnancy
Think of this as a period of preconception preparation.
The 5 Foundations of GLP-1 Success
While taking a GLP-1, focus on five things:
- Protein — Protect your muscle
- Plants + fiber — Support digestion and nutrient intake
- Hydration — Prevent dehydration and constipation
- Strength training — Tell your body to keep its muscle
- Consistency — Build habits you can continue after medication
You do not need to eat perfectly. Small, consistent choices matter much more.
1. Make Protein Your Priority
Because GLP-1 medications decrease appetite, it can become surprisingly easy to under-eat protein and other important nutrients. Weight loss can include both fat and lean tissue. Adequate nutrition combined with resistance exercise is therefore an important part of protecting muscle during weight loss.
A simple rule: eat your protein first.
At meals, start with your protein before filling up on vegetables, carbohydrates or other foods. Good options include:
- Eggs or egg whites
- Greek yogurt
- Cottage cheese
- Chicken or turkey
- Fish and seafood
- Lean beef
- Tofu or tempeh
- Edamame
- Lentils and beans
- Protein smoothies
- High-quality protein shakes when eating a full meal feels difficult
Your Beyond Fertility care team can help determine an appropriate daily protein target based on your body size, health and activity level.
When your appetite is very low
Don't force yourself to eat a huge meal. Try something small but nutrient-dense: Greek yogurt with berries, a protein smoothie with fruit, eggs with avocado toast, cottage cheese with fruit, chicken with vegetables, or soup with chicken or beans.
Small and nourishing is better than skipping meals all day.
2. Build a GLP-1-Friendly Plate
When you are able to eat a full meal, use this simple framework:
- ¼ plate: Protein — Chicken, fish, eggs, tofu, lean meat, beans or lentils
- ½ plate: Colorful plants — Vegetables, leafy greens and/or fruit
- ¼ plate: High-quality carbohydrates — Potatoes, sweet potatoes, oats, quinoa, brown rice, beans or whole grains
- Add a small amount of healthy fat — Olive oil, avocado, nuts, seeds or nut butter
This naturally creates a Mediterranean-style eating pattern rich in vegetables, fruit, legumes, whole grains, seafood, olive oil and other minimally processed foods. You don't need to eliminate carbohydrates. Quality and portion size matter more than avoiding an entire food group.
3. A Sample Day of Eating
Breakfast
- Option 1: 2 eggs + egg whites, whole-grain or gluten-free toast, berries
- Option 2: Plain Greek yogurt, berries, chia or ground flaxseed, small handful of walnuts
- Option 3 — Low appetite: Protein smoothie with protein powder, berries, spinach and unsweetened milk of choice
Lunch
Mediterranean bowl: Grilled chicken or salmon, quinoa or brown rice, cucumber + tomato + greens, hummus, olive oil + lemon
Snack — if hungry
- Apple + peanut or almond butter
- Cottage cheese + berries
- Edamame
- Greek yogurt
- Protein shake
- Vegetables + hummus
Dinner
- Option 1: Salmon, roasted vegetables, small baked potato, side salad
- Option 2: Chicken or turkey, roasted sweet potato, broccoli, olive oil
- Option 3: Turkey or tofu lettuce wraps, brown rice, vegetables, avocado
Something sweet?
You don't have to eliminate dessert. Try fruit with Greek yogurt, a small piece of dark chocolate, berries with whipped Greek yogurt, or another favorite food in a portion that feels comfortable. A sustainable eating pattern should still include foods you enjoy.
4. Foods That May Be Harder to Tolerate
GLP-1 medications slow digestion. Very large or heavy meals may therefore make nausea, reflux, bloating or abdominal discomfort worse. Especially when starting medication or increasing your dose, you may feel better limiting:
- Large meals
- Fried foods
- Very greasy foods
- Heavy cream sauces
- Large amounts of high-fat foods at once
- Excess alcohol
- Very spicy foods if you experience reflux
- Eating quickly
- Lying down immediately after eating
Try eating smaller portions slowly and stop when you first begin to feel comfortably full. Your old portion size may simply be more food than your body wants while taking a GLP-1.
5. Hydration Matters More Than You Think
When appetite decreases, thirst and fluid intake can sometimes decrease too. Keep a water bottle nearby and sip throughout the day rather than trying to drink a large amount at once. Water should be your primary beverage.
You may need additional fluids when:
- Exercising
- Spending time in hot weather
- Experiencing vomiting or diarrhea
- Traveling
- You notice darker urine or increased thirst
Electrolytes can occasionally be helpful, particularly with increased fluid losses, but you generally don't need sugary sports drinks every day.
6. Preventing Constipation
Constipation is common with GLP-1 medications. Help keep your digestive system moving with fiber + fluid + movement. Include foods such as:
- Berries
- Kiwi
- Pears
- Vegetables
- Beans and lentils
- Oats
- Chia seeds
- Ground flaxseed
- Whole grains
Increase fiber gradually. Suddenly adding a large amount of fiber when digestion is already slowed can actually make bloating and discomfort worse. A 10–15 minute walk after meals can also help. If constipation becomes persistent or uncomfortable, contact your care team rather than continually adding supplements or laxatives on your own.
7. Protect Your Muscle While Losing Fat
One of our biggest priorities during GLP-1 treatment is muscle preservation. The scale doesn't tell us what kind of weight you are losing. We want your body to lose predominantly fat, while giving it every reason to hold onto metabolically important muscle.
The formula: protein + strength training + adequate nutrition. Cardio is wonderful for cardiovascular health, but cardio alone doesn't provide the same stimulus for maintaining muscle.
Your Strength-Training Goal
Aim for approximately 2–3 strength-training sessions each week, based on your current fitness level and medical guidance. You do not have to become a weightlifter. Resistance can come from dumbbells, weight machines, resistance bands, kettlebells, body-weight exercises, Pilates or other resistance-based exercise.
Simple Beginner Full-Body Workout
Perform 2–3 sets of approximately 8–12 repetitions:
- Squat: Body-weight squat, goblet squat or leg press
- Hip hinge: Romanian deadlift or hip hinge
- Push: Chest press, push-up or dumbbell press
- Pull: Seated row or dumbbell row
- Glutes: Hip thrust or glute bridge
- Shoulders: Shoulder press
- Core: Plank, dead bug or Pallof press
Choose a resistance that feels challenging while still allowing you to maintain good form. As you become stronger, gradually increase the resistance, repetitions or difficulty. This is called progressive overload, and it gives your body a reason to maintain and build muscle.
Don't Forget Everyday Movement
Strength training is the foundation for muscle preservation, but everyday movement matters too. Walking is one of the simplest ways to support metabolic health. Try:
- A 10-minute walk after meals
- Walking while taking phone calls
- Taking the stairs
- A longer walk on non-strength days
- Yoga, cycling, hiking or another activity you enjoy
The best movement plan is one you can actually maintain.
Your Fertility + GLP-1 Plan
GLP-1 therapy can be an effective tool to improve metabolic health, reduce inflammation, and optimize your body before pregnancy. Emerging research suggests that a prolonged "washout" period before conception may not be necessary, and many patients can safely continue GLP-1 therapy while trying to conceive under the guidance of their healthcare provider.
GLP-1 medications are not recommended during pregnancy, so it is important to notify your Beyond Fertility care team as soon as you have a positive pregnancy test or if you think you may be pregnant. Your provider will guide you on when to discontinue your medication based on your individual fertility and treatment plan. Every patient's situation is unique, and your Beyond Fertility provider will work with you to determine the safest approach for your goals.
Recommended Laboratory Monitoring
Before Starting GLP-1 Therapy
To ensure GLP-1 therapy is safe and to establish a baseline, these are the recommended labs:
- Complete Blood Count (CBC)
- Comprehensive Metabolic Panel (CMP)
- Hemoglobin A1c
- Fasting Glucose
- Fasting Insulin
- Lipid Panel
- Thyroid-Stimulating Hormone (TSH) and Free T4
- Vitamin D (25-OH)
- Vitamin B12
- Folate
- Ferritin (iron stores)
Additional fertility or hormone testing may be recommended as well based on your individual health history and treatment goals.
Recommended Follow-Up Monitoring
During treatment, we would like to periodically repeat selected labs to monitor your progress and overall health.
Every 3–6 months (or as clinically indicated):
- Comprehensive Metabolic Panel (CMP)
- Hemoglobin A1c
- Fasting Glucose
- Fasting Insulin (if indicated)
- Lipid Panel
Every 6–12 months (or sooner if clinically indicated):
- CBC
- Ferritin
- Vitamin B12
- Folate
- Vitamin D
- TSH and Free T4 (particularly if you have thyroid disease or are taking thyroid medication)
Your Beyond provider will individualize laboratory monitoring based on your medical history, weight-loss progress, symptoms, and fertility goals.
Think Beyond the Number on the Scale
Your progress is more than your weight. We may also be interested in improvements such as waist circumference, strength, energy, blood pressure, glucose and insulin regulation, hemoglobin A1c, lipid levels, menstrual-cycle patterns, metabolic markers, relationship with food, sleep, and physical endurance.
The goal is better metabolic health—not the smallest possible body size.
Managing Common Side Effects
Nausea
Try smaller meals, eating slowly, stopping at the first sign of fullness, bland foods when needed, avoiding greasy meals, staying hydrated, and ginger tea or ginger-containing foods if tolerated.
Feeling too full
Reduce portion sizes. You may find that eating half of your previous meal and saving the rest works better.
Reflux
Try smaller meals and avoid lying down for 2–3 hours after eating. Notice whether high-fat, spicy or acidic foods trigger your symptoms.
Diarrhea
Prioritize fluids. Temporarily choose simpler foods that are easier to digest and contact your care team if diarrhea is severe or persistent.
Constipation
Gradually increase fluids, fiber and movement. Contact us if constipation is persistent, painful or not improving.
Your Weekly GLP-1 Checklist
Instead of focusing only on pounds lost, ask yourself:
- Did I prioritize protein most days?
- Did I eat fruits and/or vegetables every day?
- Did I stay hydrated?
- Did I strength train 2–3 times?
- Did I move my body regularly?
- Am I having regular bowel movements?
- Am I eating enough to feel nourished?
- Am I sleeping well?
- Are my side effects manageable?
- Am I building habits I could continue without medication?
If most of these are happening consistently, you are making meaningful progress.
When to Contact Your Care Team
Please contact your provider if:
- Nausea or vomiting makes it difficult to eat or drink
- You are frequently skipping meals because you cannot tolerate food
- You are losing weight much faster than expected
- You feel unusually weak, dizzy or lightheaded
- Constipation becomes severe or persistent
- You have symptoms of dehydration
- You are struggling to meet your nutrition needs
- Side effects become difficult to manage
- You are ready to begin trying to conceive
- You think you may be pregnant
Seek urgent medical evaluation for severe or persistent abdominal pain, especially pain that radiates to the back or occurs with vomiting, or for symptoms of a serious allergic reaction or another severe or rapidly worsening symptom.
A Final Reminder
You don't need to eat the least amount possible for your GLP-1 to work. In fact, that isn't our goal. We want you to eat enough of the right foods to nourish your body, protect your muscle, support your metabolism and prepare for pregnancy.
Use this time to practice the habits you want to carry with you: eat protein, eat plants, lift weights, walk often, drink water, sleep well, listen to your body, and be consistent, not perfect.
Your medication is one tool. The habits you build alongside it are what help turn weight loss into long-term health.
This guide provides general education and does not replace individualized medical or nutrition advice. Your medication dose, nutrition needs, exercise plan and preconception timeline should be determined with your healthcare team.
