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
Simple Lunch Ideas For Weight Loss
Eating a balanced, satisfying lunch is one of the most practical ways to support sustainable weight loss. The key is choosing meals that keep you full, stable your blood sugar, and fit within a reduced-calorie diet — without requiring hours in the kitchen. Whether you're managing your weight through lifestyle changes alone or alongside prescription weight loss medication, the right lunch choices make a real difference to your results.
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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.
Build a Balanced Weight Loss Lunch
The NHS recommends creating balanced lunches that include protein, fibre, and healthy fats — these three elements help you feel satisfied and avoid mid-afternoon hunger spikes. Aim for approximately 400–500 kcal per lunch, though your individual needs depend on your current weight and activity level.
- Protein sources: Grilled chicken breast, tinned tuna, eggs, Greek yoghurt, lentils, chickpeas, tofu, or lean turkey
- Complex carbohydrates: Wholegrain bread, brown rice, sweet potatoes, oats, quinoa, or barley
- Vegetables and salads: Aim to fill half your plate with non-starchy vegetables — they add volume and nutrients without excess calories
- Healthy fats: Olive oil, avocado, nuts, seeds, or oily fish — these support satiety and nutrient absorption
Simple combinations work best: grilled chicken with roasted vegetables and brown rice, or a large mixed salad with tinned beans and a drizzle of olive oil dressing. You can also use our free BMI calculator to understand your current weight status and set realistic targets, then track progress with our free progress tracker.
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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.
Quick, Low-Effort Lunch Ideas
Not every lunch needs to be complicated. Batch-prepare proteins and grains on Sunday evening, then assemble different combinations throughout the week.
- Tuna salad: tinned tuna mixed with Greek yoghurt, served on a bed of lettuce with cherry tomatoes and cucumber
- Chickpea curry: leftover curry from dinner with additional vegetables, eaten with a small portion of rice
- Egg sandwich: two boiled eggs on wholegrain toast with spinach and sliced tomato
- Lentil soup: homemade or quality tinned lentil soup with a side salad and one slice of wholegrain bread
- Chicken wrap: grilled chicken, hummus, lettuce, and peppers in a wholegrain wrap
These meals are quick to assemble, portable for work, and help create the calorie deficit needed for sustainable weight loss uk standards recommend 0.5–1 kg weekly loss.
- 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 makes a lunch good for weight loss?
A weight-loss-supporting lunch includes protein, fibre, and healthy fats in balanced portions. Protein keeps you full longer, fibre stabilises blood sugar, and healthy fats support nutrient absorption. Aim for roughly 400–500 kcal with plenty of vegetables. The NHS recommends this balanced approach as more sustainable than extreme restriction.
Can I still eat carbohydrates when losing weight?
Yes — carbohydrates are important for energy and health. Choose complex carbohydrates like wholegrain bread, brown rice, sweet potatoes, and oats rather than refined options. These digest more slowly, preventing blood sugar spikes and keeping you satisfied longer. Portion control matters more than elimination.
How does weight loss medication like GLP-1 affect lunch choices?
GLP-1 medications like Wegovy may reduce appetite and help you feel fuller after smaller meals. If you're taking prescription weight loss medication alongside dietary changes, you may find smaller portions feel satisfying. Always discuss dietary changes with your prescriber, and our free GLP-1 weight loss calculator can help estimate potential weight loss at different doses.
How many calories should my lunch contain?
A typical lunch for weight loss should be around 400–500 kcal, though this depends on your total daily calorie target. To lose weight sustainably, you need a calorie deficit of roughly 500 kcal per day, resulting in approximately 0.5 kg weekly loss according to NHS guidance. Your GP or a registered dietitian can advise on your personal target.
What's the best way to track if these lunches are helping?
Track your weight weekly and note how you feel after eating — energy levels, hunger, and satisfaction matter as much as the number on the scale. Our free progress tracker lets you log weight changes over time. Calculate your BMI using our free BMI calculator to see how it changes as you lose weight, and consult your GP if you're not seeing progress after 3–4 weeks.
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.