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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Vegetables for Weight Loss — A UK Health Guide
Vegetables are one of the most important foods for sustainable weight loss and healthy weight management UK. They're low in calories, high in fibre, and packed with nutrients that help you feel fuller for longer. Whether you're managing your weight through diet alone or alongside prescription weight loss medication, vegetables form the foundation of any effective weight loss plan. This guide explains why vegetables matter, which ones are best, and how to use them as part of your weight management strategy.
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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.
Why Vegetables Are Essential for Weight Loss
Vegetables support weight loss in several important ways. They're naturally low in calories — most vegetables contain 20–50 calories per 100g — so you can eat generous portions without exceeding your daily calorie target. This is crucial because sustainable weight loss typically requires a calorie deficit of around 500 calories per day, which works out to losing approximately 0.5 kg per week according to NHS guidance.
Fibre content is the real key. Vegetables like broccoli, Brussels sprouts, and leafy greens are high in dietary fibre, which slows digestion, stabilises blood sugar levels, and helps you feel satisfied after meals. Fibre also feeds beneficial gut bacteria, which increasingly research suggests plays a role in healthy weight management. Additionally, vegetables are nutrient-dense — they deliver vitamins, minerals, and antioxidants your body needs, which is important when eating in a calorie deficit.
For those using GLP-1 weight loss medication like Mounjaro or Wegovy, vegetables are ideal because they're gentle on the stomach during the early weeks when side effects like nausea are common, yet they still provide the nutritional support your body needs for sustainable results.
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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.
Best Vegetables for Weight Loss and How to Use Them
Non-starchy vegetables are your priority: leafy greens (spinach, kale, lettuce), cruciferous vegetables (broccoli, cauliflower, Brussels sprouts), and other options like courgettes, peppers, tomatoes, mushrooms, and green beans. These can fill half your plate at meals without significantly impacting your calorie intake. Starchy vegetables like potatoes, sweet potatoes, and corn are more calorie-dense and should be portion-controlled, though they're still nutritious and can be part of a balanced weight loss diet.
Use the MyWeightCheck BMI calculator to understand your current weight status, then build your meals around non-starchy vegetables. Aim for at least 3–5 portions daily. Roast them with minimal oil, steam, or eat them raw in salads to keep calories low. Combine vegetables with lean protein and whole grains for balanced, filling meals that support your weight management goals.
- 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 portions of vegetables should I eat daily for weight loss?
The NHS recommends at least 5 portions of fruit and vegetables daily as part of a healthy diet. For weight loss, focus on non-starchy vegetables which are low in calories but high in fibre. You can eat generous portions of broccoli, leafy greens, and peppers without worrying about calories, while being more measured with starchy vegetables like potatoes.
Can I eat unlimited vegetables when losing weight?
You can eat unlimited non-starchy vegetables like spinach, broccoli, and courgettes, as their calorie content is negligible. However, starchy vegetables like potatoes, corn, and sweet potatoes are more calorie-dense and should be portion-controlled. Even for low-calorie vegetables, balance matters — include protein and healthy fats so your meals are nutritionally complete.
Are frozen or tinned vegetables as good as fresh for weight loss?
Yes, frozen and tinned vegetables are equally nutritious and supportive for weight loss. Frozen vegetables are picked at peak ripeness and locked in nutrients. Tinned vegetables are fine too, but rinse them to reduce sodium. The key is eating vegetables regularly, whether fresh, frozen, or tinned — consistency matters more than the format you choose.
Do vegetables help if I'm using weight loss medication like Mounjaro or Wegovy?
Yes, absolutely. Vegetables are ideal alongside prescription weight loss medication because they're nutritious, low-calorie, gentle on the stomach (important during the adjustment phase), and help you feel full despite smaller portion sizes. They also support the healthy lifestyle changes — diet and physical activity — that make weight loss medication most effective.
What's the best way to prepare vegetables for weight loss?
Prepare vegetables with minimal added fat to keep calories low: steam, roast with a light spray of oil, grill, or eat raw in salads. Avoid deep-frying or cooking in heavy sauces. Roasting or grilling brings out natural flavours without needing added calories. Season with herbs and spices instead of oils or butter for maximum flavour with minimal calorie impact.
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.