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
Do Stomach Belts Help With Weight Loss?
Stomach belts, also called abdominal binders or waist trainers, are worn around the midsection with the promise of slimming your waistline and aiding weight loss. However, the evidence for their effectiveness is limited. Whilst they may provide temporary compression and postural support, stomach belts do not burn fat or contribute to meaningful weight management in the UK. Understanding what actually works for sustainable weight loss — including lifestyle changes and, where appropriate, prescription weight loss medication — is far more effective than relying on compression garments. This guide explains the reality of stomach belts and explores evidence-based alternatives for achieving healthier weight outcomes.
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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.
How Stomach Belts Work and What Research Says
Stomach belts work by applying compression around the abdomen, which may create a temporary slimming effect and provide postural support. However, they do not reduce body fat, increase calorie burn, or contribute to actual weight loss.
Research shows that stomach belts:
- Provide only temporary visual slimming — the effect disappears when you remove the belt
- Do not increase metabolism or burn calories
- Cannot break down adipose tissue (fat cells)
- May temporarily reduce appetite in some wearers through mild stomach pressure — though evidence is weak
- Can cause skin irritation, reduced circulation, and discomfort with prolonged wear
Waist trainers, a more extreme version marketed for reshaping the body, have no scientific evidence supporting permanent body shape changes. Any perceived slimming is temporary compression only. For genuine weight management in the UK, the NHS emphasises that sustainable weight loss requires a calorie deficit through dietary changes and increased physical activity — not compression garments.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care — from a UK-regulated online pharmacy.
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.
Evidence-Based Alternatives to Stomach Belts
If you're seeking effective weight management, evidence-based approaches deliver real, lasting results. These include:
- Calorie deficit: Consuming approximately 500 kcal fewer than you expend typically results in losing around 0.5 kg per week — the NHS-recommended safe rate
- Physical activity: Regular exercise supports both weight loss and cardiovascular health
- Structured diet programmes: Mediterranean and low-carbohydrate diets have strong evidence for sustainable weight management
- Prescription weight loss medication: For adults with a BMI of 30 or above (or 27–29.9 with weight-related health conditions), GLP-1 injections like Wegovy may help — alongside dietary and lifestyle changes
Use our free BMI calculator above to assess your current weight status, and explore our GLP-1 weight loss calculator if you think prescription support might be appropriate for you.
- 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.
Can a stomach belt reduce belly fat?
No. Stomach belts provide only temporary visual compression and do not reduce actual body fat. They cannot break down fat cells or increase metabolism. Any slimming effect disappears when you remove the belt. Genuine fat loss requires a calorie deficit through diet and physical activity.
Are waist trainers effective for weight loss?
No. Waist trainers have no scientific evidence supporting permanent body shape changes or weight loss. They may cause discomfort, skin irritation, and reduced circulation with prolonged wear. The temporary visual effect is compression only and reverses immediately after removal.
What does the NHS recommend for weight loss?
The NHS recommends achieving weight loss through a calorie deficit of approximately 500 kcal per day (resulting in around 0.5 kg per week loss), combined with increased physical activity and dietary changes. For some adults, prescription weight loss medication may be appropriate alongside these lifestyle changes — discuss with your GP.
What is the most effective way to lose weight in the UK?
Evidence-based weight loss combines a sustainable calorie deficit, regular physical activity, and structured dietary approaches like the Mediterranean diet. For adults with a BMI of 30 or above, or 27–29.9 with weight-related health conditions, prescription weight loss injections like Wegovy may help as part of a comprehensive weight management plan.
Should I wear a stomach belt while exercising?
Stomach belts do not enhance weight loss during exercise and may restrict breathing and circulation. Focus instead on sustainable exercise programmes and a balanced diet. If you have concerns about exercising safely, discuss with your GP or a fitness professional. Use our progress tracker to log your weight loss journey with proven methods.
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.