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
Weight Loss Lunch — Healthy Eating for Sustainable Results
What you eat at lunch plays a key role in weight management and overall health. A balanced weight loss lunch should combine protein, vegetables, and healthy fats to keep you satisfied throughout the afternoon. This guide explores practical lunch strategies aligned with NHS weight management principles, helping you understand portion sizes and calorie balance. Whether you're managing your weight through diet alone or alongside weight loss medication, lunch is a critical meal for maintaining a calorie deficit and supporting your weight loss goals.
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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.
Building a Balanced Weight Loss Lunch
A nutritious weight loss lunch typically contains 400–600 calories and includes three key components: lean protein, non-starchy vegetables, and healthy fats. Protein—such as grilled chicken, fish, turkey, or pulses—helps you feel fuller for longer and preserves muscle mass during weight loss. Aim for a palm-sized portion (approximately 100–150g cooked weight).
- Fill half your plate with vegetables (broccoli, peppers, leafy greens, carrots)
- Include a quarter plate of wholegrain carbohydrates (brown rice, sweet potato, oats) or protein
- Add a small amount of healthy fat (olive oil, avocado, nuts)
- Stay hydrated—drink water before and with your meal
This approach aligns with NHS guidance on portion control and supports a steady weight loss rate of 0.5–1 kg per week. Use our free BMI calculator and weight converter to understand your personal calorie needs based on your current weight and health goals.
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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.
Practical Lunch Ideas and Weight Management Medication
Whether you're focusing on nhs weight loss strategies or considering prescription weight loss medication like GLP-1 injections, lunch planning remains important. If you're taking Mounjaro or Wegovy, you may experience reduced appetite, making smaller portions feel satisfying. Start with smaller lunch quantities and adjust based on hunger signals.
Practical lunch options include: grilled chicken salad with olive oil dressing, salmon with roasted vegetables, turkey and lettuce wraps, lentil soup with whole grain bread, or egg-based dishes with vegetables. Meal preparation on Sundays helps maintain consistency. Track your progress using our free progress tracker to monitor weight changes and identify which lunch patterns support your goals. Remember that sustainable weight loss combines dietary changes with physical activity and, where appropriate, professional medical support.
- 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 a weight loss lunch contain?
NHS guidance suggests a calorie deficit of approximately 500 kcal per day for sustainable weight loss of 0.5–1 kg per week. A typical weight loss lunch should be 400–600 calories, depending on your total daily allowance, activity level, and personal goals. Your GP or a healthcare professional can advise on your specific calorie needs.
Does what I eat for lunch matter if I'm taking Wegovy or Mounjaro?
Yes. While GLP-1 medications like Wegovy and Mounjaro may reduce appetite, eating nutritious lunches supports overall health and sustainable weight loss. Clinical trials showed that medication works best alongside a reduced-calorie diet and increased physical activity. Focus on protein-rich foods that satisfy you longer.
What's the difference between weight management and weight loss?
Weight management typically refers to maintaining a healthy weight long-term through balanced eating and activity. Weight loss is the process of reducing body weight. Both involve similar principles: calorie balance, physical activity, and sustainable habits. The NHS offers weight loss support through specialist services for adults with a BMI of 30 or above.
Can I use our GLP-1 calculator if I'm only managing weight through diet?
Our GLP-1 weight loss calculator is specifically designed for people considering or taking prescription weight loss medications like Mounjaro or Wegovy. For diet-only weight loss, use our free BMI calculator and weight converter to track progress and understand your healthy weight range.
How should lunch portions change if I'm taking weight loss medication?
If you're taking Wegovy, Mounjaro, or similar GLP-1 medications, you may feel full sooner. Start with smaller lunch portions (300–400 calories) and increase if needed. Always follow your prescriber's guidance and monitor how you feel. Never skip meals—instead, eat smaller, balanced portions and stay hydrated throughout the day.
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.