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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Simple Lunch Ideas For Weight Loss At Work
Eating a healthy lunch at work is one of the easiest ways to support your weight loss goals. Packing a nutritious midday meal helps you avoid high-calorie takeaway options and keeps your energy steady throughout the afternoon. Whether you're following NHS weight management guidelines or using prescription weight loss medication alongside lifestyle changes, choosing the right lunch makes a real difference. Here are simple, practical ideas that work for busy professionals.
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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.
High-Protein Lunch Ideas That Keep You Full
Protein-rich lunches are particularly effective for weight management because they help you feel fuller for longer, reducing the temptation to snack later in the afternoon. Aim for 25–30g of protein per meal. Simple options include:
- Chicken or turkey wraps: Grilled chicken breast with hummus, lettuce, and tomato in a wholemeal wrap (around 350 kcal)
- Tuna salad boxes: Tinned tuna mixed with low-fat yogurt, served with mixed leaves, cucumber, and a drizzle of olive oil (around 300 kcal)
- Egg-based meals: Hard-boiled eggs with wholegrain bread, cheese, and fruit (around 380 kcal)
- Pulse-based bowls: Lentil or chickpea salad with roasted vegetables and feta cheese (around 320 kcal)
All these options are easy to prepare the evening before and transport safely in a lunchbox. Try using our free BMI calculator to track how these consistent healthy choices support your weight management progress over time.
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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 Prep Strategies For Busy Weekdays
Meal prep saves time and prevents unhealthy choices. Spend 30 minutes on Sunday preparing base components: grilled chicken breasts, roasted vegetables, cooked grains like brown rice or quinoa, and hard-boiled eggs. Mix and match these throughout the week to create variety without extra effort. Keep portions controlled by using a small container (around 400–500 kcal per lunch) rather than eating directly from larger food sources. Include a piece of fruit and plenty of water. For those using weight loss medication like GLP-1 injections alongside lifestyle changes, our GLP-1 weight loss calculator can help you estimate potential results when combined with balanced nutrition and regular activity.
- 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 work lunch contain for weight loss?
The NHS recommends a calorie deficit of around 500 kcal daily for sustainable weight loss of roughly 0.5 kg per week. A lunch of 400–500 kcal leaves room for breakfast, dinner, and snacks within a typical 1500–1800 kcal daily target. Individual needs vary — your GP can advise based on your personal health profile.
What if I don't have time to meal prep?
Buy pre-made options: supermarket rotisserie chicken with bagged salad, tinned tuna with wholemeal bread, or ready-made pulse salads. Pair these with fruit and yoghurt. These require no preparation and are still significantly cheaper and lower in calories than most takeaway lunches.
Can I eat the same lunch every day?
Yes, many people find this helpful for weight management — it removes decision fatigue and makes calorie tracking easier. However, rotating between 3–4 different lunches ensures you get a range of nutrients across the week and prevents boredom.
Are shop-bought meal deals suitable for weight loss?
Most traditional meal deals (around 1000+ kcal) are too high for a single meal if you're aiming for weight loss. Choose the "lighter" ranges many supermarkets now offer, or build your own: a salad, small protein item, and water. These typically total 400–500 kcal.
Does eating the same lunch every day meet NHS weight management guidelines?
Yes — the NHS emphasises consistency and sustainable habits over variety. A simple, calorie-controlled lunch you actually enjoy eating is far more effective than a complex meal you won't stick to. Track your weight loss progress over weeks using our progress tracker to stay motivated.
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.