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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Good Weight Loss Vegetables for UK Weight Management
Vegetables are a cornerstone of any weight loss plan, but nutrition alone isn't always enough. This guide covers the best vegetables to support weight loss in the UK and explains how prescription weight management options like Mounjaro and Wegovy can complement a healthy diet for eligible adults. If you're serious about losing weight, understanding both dietary choices and the full range of available treatments is essential.
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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.
Best Vegetables for Weight Loss & Prescription Options
High-fibre, low-calorie vegetables are ideal for weight loss because they fill you up without adding significant calories. Leafy greens like spinach, kale, and lettuce are excellent choices—fewer than 25 calories per 100g. Cruciferous vegetables such as broccoli, cauliflower, and cabbage contain compounds that support metabolism and provide sustained fullness. Courgettes, peppers, tomatoes, and green beans are nutrient-dense options under 40 calories per 100g.
For UK adults looking to manage weight, the NHS recommends a calorie deficit of approximately 500 kcal per day for sustainable loss of around 0.5kg per week. Vegetables should form the majority of your plate—at least half of each meal. However, if diet and exercise alone haven't delivered results, prescription weight loss medications are available in the UK. Mounjaro (tirzepatide) and Wegovy (semaglutide) are GLP-1 weight management injections licensed for eligible adults. These work alongside healthy eating, not instead of it. Use our free GLP-1 weight loss calculator to explore potential outcomes at different medication doses.
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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.
NHS Access vs Private Prescription Weight Loss in the UK
NHS weight loss medication is available through specialist tier 3 weight management services, though access varies significantly by region and waiting lists can be lengthy. You'll need referral from your GP and assessment by a specialist team. Private prescription weight loss is also available in the UK through GPhC-registered online pharmacies following an online clinical assessment—no NHS referral needed, though costs typically range from £129–£320 per month depending on the dose.
To find out if you're eligible for prescription weight management: calculate your BMI using our free BMI calculator above, then speak with your GP about your options. Eligibility generally requires a BMI of 30 or above, or 27+ with weight-related health conditions such as type 2 diabetes, high blood pressure, or sleep apnoea. Your GP can discuss whether medication is appropriate for you and guide you toward NHS services if available in your area.
- 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.
Which vegetables have the fewest calories for weight loss?
Leafy greens (spinach, kale, lettuce), cruciferous vegetables (broccoli, cauliflower, Brussels sprouts), and courgettes are among the lowest-calorie options—all under 40 calories per 100g. These are high in fibre, which keeps you full longer, making them ideal for weight loss support.
Can vegetables alone help me lose weight?
Vegetables are essential for healthy weight loss, but you also need a calorie deficit and regular physical activity. The NHS recommends losing 0.5–1kg per week through a combination of diet and exercise. If this isn't working, prescription weight loss medication may help alongside lifestyle changes.
What are GLP-1 weight loss injections, and how do they work in the UK?
Mounjaro and Wegovy are prescription-only GLP-1 receptor agonist injections licensed in the UK for weight management. They work by reducing appetite and helping you feel fuller after smaller meals. Clinical trials showed average weight loss of 15–21% of body weight, though individual results vary significantly.
How do I access prescription weight loss medication on the NHS?
Ask your GP for a referral to your local tier 3 specialist weight management service. They will assess your eligibility based on your BMI and health conditions. NHS availability varies by region; private options are also available through online prescribing services.
What's the difference between Mounjaro and Wegovy?
Mounjaro (tirzepatide) is a dual GIP and GLP-1 agonist with a maximum dose of 15mg weekly. Wegovy (semaglutide) is a GLP-1 agonist with a maximum dose of 2.4mg weekly. Clinical trials show similar average weight loss results, though individual responses vary. Both are prescription-only and require clinical assessment.
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.