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
Free tracker included with every download this week
Prepared Meals For Weight Loss
Prepared meals are a practical strategy for supporting weight loss alongside a healthy lifestyle. By planning and preparing meals in advance, you can control portion sizes, reduce unplanned snacking, and make consistent dietary choices that support weight management in the UK. Meal prep works well alongside other weight loss approaches, including prescription weight loss medication prescribed by your GP or through specialist services. This guide explains how prepared meals fit into an effective weight loss plan and how to get started.
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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.
How Prepared Meals Support Weight Loss
Prepared meals help with portion control — when you pre-portion food, you're less likely to eat larger servings than intended. This naturally creates the calorie deficit needed for weight loss. The NHS recommends losing weight at a rate of 0.5 to 1 kg per week, which typically requires a deficit of around 500 calories daily. Meal prep removes the need for last-minute takeaway choices or convenience foods, which are often higher in calories, sugar, and salt.
- Reduces decision fatigue — choosing what to eat is easier when meals are ready
- Prevents impulsive snacking — structured meals help maintain consistent calorie intake
- Saves time and money — batch cooking is more efficient than daily cooking
- Enables accurate calorie tracking — knowing exact ingredients supports weight management
For adults with a BMI in the overweight or obese range, combining meal prep with increased physical activity creates a sustainable approach to weight loss. Try our free BMI calculator above to check your current BMI and see how prepared meals might support your personal weight loss goals.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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.
Prepared Meals With Weight Loss Medication
If you're using GLP-1 weight loss medication like Mounjaro or Wegovy, prepared meals become even more valuable. These prescription medications help reduce appetite and support feeling fuller after smaller meals, so having appropriately portioned meals ready is ideal. Clinical trials showed these medications help participants lose an average of 15–21% body weight when combined with diet and exercise — prepared meals make this easier to achieve consistently.
Prepared meals work well because they align with how GLP-1 medication affects appetite. You'll eat smaller portions naturally, and having meals prepared removes barriers to making healthy choices. Our GLP-1 weight loss calculator can help you estimate potential results, and our progress tracker lets you log your weight loss journey as you combine meal prep with medication and lifestyle changes.
- 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.
What should prepared meals contain for weight loss?
Focus on balanced meals with lean protein (chicken, fish, pulses), plenty of vegetables (at least half your plate), wholegrain carbohydrates, and healthy fats. Aim for roughly 300–500 calories per meal depending on your target daily intake. Track calories accurately by weighing ingredients when preparing meals.
How long can prepared meals be stored?
Most prepared meals last 3–4 days in the fridge. You can freeze meals for up to 3 months. Freeze portions in individual containers for convenient grab-and-go meals. Thaw overnight in the fridge before reheating to 75°C throughout.
Is meal prep more expensive than buying food daily?
No — batch cooking is typically cheaper. Buying ingredients in bulk and preparing several meals at once reduces waste and cost per meal. Planning meals reduces impulse purchases and takeaways, which saves money overall.
Can I use prepared meals with prescription weight loss injections?
Yes — prepared meals work well with GLP-1 medications. Having appropriate portion sizes ready makes it easier to manage the reduced appetite these medications cause. Always follow your prescriber's dietary guidance alongside any medication.
How do I know if prepared meals are working for weight loss?
Track your weight weekly and monitor how you feel. Our free progress tracker helps you log weight changes. Remember that weight fluctuates daily, so look for trends over 2–4 weeks. If you're on prescription weight loss medication, your GP or specialist will monitor your progress and adjust treatment if needed.
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.