The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
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Healthy Meal Prep Recipes For Weight Loss
Meal prep is one of the most effective ways to support weight loss in the UK, helping you maintain portion control and avoid high-calorie choices when you're busy. Whether you're aiming for weight management through diet alone or alongside prescription weight loss medication, preparing nutritious meals in advance makes it easier to stick to a calorie deficit. This guide covers practical, balanced recipes and strategies that align with NHS weight loss advice and help you build sustainable eating habits.
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Calculate Your BMI Instantly
Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
Practical Meal Prep Strategies For Weight Loss
Successful meal prep for weight loss starts with planning ahead and understanding portion sizes. The NHS recommends a calorie deficit of approximately 500 kcal per day to achieve sustainable weight loss of around 0.5 to 1 kg per week. When meal prepping, focus on filling half your plate with vegetables, a quarter with lean protein, and a quarter with complex carbohydrates.
- Lean proteins: Chicken breast, turkey, cod, eggs, and lentils keep you fuller longer
- Vegetables: Broccoli, spinach, peppers, and courgettes add bulk without many calories
- Whole grains: Brown rice, oats, and sweet potatoes provide sustained energy
- Healthy fats: Olive oil, nuts, and avocado in measured amounts support satiety
Use our free BMI calculator above to understand your current weight status and healthy weight range, which helps you set realistic meal prep goals aligned with NHS weight loss targets.
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How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
Simple, Balanced Meal Prep Recipes
Example recipe: Mediterranean chickpea salad — Mix tinned chickpeas, diced cucumber, cherry tomatoes, red onion, and fresh parsley with a drizzle of olive oil and lemon juice. Portion into containers with grilled chicken. Approximately 350 kcal per serving.
Example recipe: Vegetable stir-fry with tofu — Stir-fry mixed vegetables (broccoli, peppers, snap peas) with firm tofu in a small amount of sesame oil, season with soy sauce and ginger. Serve over 75g brown rice. Approximately 320 kcal per serving.
Prep 3–4 meals on one day to save time. Store in glass containers in the fridge for up to 4 days. Track your meals using our free progress tracker to monitor how meal prep supports your weight management progress.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
How many calories should I aim for per day when meal prepping for weight loss?
The NHS recommends a calorie deficit of approximately 500 kcal per day for sustainable weight loss. Most women aim for 1200–1500 kcal daily, and most men 1500–1900 kcal daily, but individual targets vary based on age, activity level, and current weight. Always consult your GP for personalised guidance, especially if you're taking prescription weight loss medication.
Can meal prep work alongside weight loss injections like Wegovy or Mounjaro?
Yes. Prescription weight loss medications like semaglutide (Wegovy) and tirzepatide (Mounjaro) work best alongside a reduced-calorie diet and increased physical activity. Meal prep helps you maintain consistent, balanced nutrition and manage portion sizes, which complements the appetite-regulating effects of these medications. Clinical trials showed best results when medication was combined with dietary changes.
What's the best way to store meal prep containers?
Use glass or high-quality plastic containers with tight-fitting lids. Store in the fridge at 4°C or below for up to 4 days, or freeze for up to 3 months. Label containers with the date and contents. Allow hot food to cool to room temperature before refrigerating to prevent condensation.
How do I calculate calories in my home-cooked meal prep recipes?
Weigh individual ingredients using kitchen scales before cooking, then use a free food tracking app (such as MyFitnessPal) to calculate total calories and macronutrients. Divide the final cooked weight by the number of portions. This helps you understand portion sizes and calorie content for accurate weight management tracking.
Is meal prep suitable if I have a BMI in the healthy range but want to maintain weight loss?
Yes, meal prep is excellent for weight maintenance. Use our free BMI calculator above to confirm your healthy weight range (typically BMI 18.5–24.9 for UK adults), then adjust portions to match maintenance calories rather than a deficit. Consistency with balanced meals makes long-term weight maintenance much easier than relying on ad-hoc eating choices.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.