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
Can Weight Loss Get Rid Of Cellulite?
Cellulite affects most people regardless of weight, but losing excess weight may help reduce its appearance. Weight loss can improve skin texture and reduce the dimpled look by decreasing fat deposits beneath the skin. However, cellulite is also influenced by genetics, age, hormones, and skin elasticity — so results vary. For those looking to lose weight in the UK, prescription weight management options like Mounjaro and Wegovy are available to eligible adults. This guide explores how weight loss might help and what support is available through the NHS and private prescribing.
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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.
Weight Loss and Cellulite: What the Evidence Shows
Cellulite forms when fat deposits push upward through connective tissue beneath the skin, creating a dimpled appearance. Weight loss may reduce cellulite by decreasing overall body fat, which can soften its appearance. However, cellulite is not simply caused by weight — genetics, hormones, age, and skin elasticity play significant roles, which is why some people experience cellulite across all BMI ranges.
For sustainable weight loss, clinical evidence supports combining lifestyle changes — reduced-calorie diet and increased physical activity — with prescription support where appropriate. GLP-1 weight loss medications available in the UK, such as Mounjaro (tirzepatide) and Wegovy (semaglutide), may support weight management by helping reduce appetite and support feeling fuller. Our GLP-1 weight loss calculator can help you explore potential weight loss outcomes at different doses. Use our free BMI calculator to understand your current weight category and discuss cellulite concerns with your GP alongside any weight management plan.
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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.
Prescription Weight Loss Options Available in the UK
Eligible UK adults can access prescription weight loss medication through NHS specialist services or private online prescribing. Two main options are licensed in the UK: Mounjaro (tirzepatide), a dual GIP and GLP-1 receptor agonist administered once weekly, and Wegovy (semaglutide), a GLP-1 receptor agonist also given weekly. Both are prescription-only and require clinical assessment to determine suitability.
To find out if you're eligible: calculate your BMI using our free BMI calculator on this page, then discuss weight management options with your GP. They can refer you to NHS weight loss services or you can pursue private prescribing through a GPhC-registered pharmacy following an online consultation. Track your weight loss progress with our free progress tracker to monitor improvements over time.
- 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.
Does weight loss definitely remove cellulite?
Not always. While weight loss may reduce cellulite's appearance by decreasing fat deposits, cellulite is also determined by genetics, hormones, age, and skin elasticity. Some people see significant improvement with weight loss; others see minimal change. Results vary individually. Discuss realistic expectations with your GP.
What weight loss rate is safe and sustainable?
The NHS recommends losing 0.5 to 1 kg per week as a safe, sustainable rate. Faster weight loss can lead to muscle loss and nutritional deficiency. A calorie deficit of around 500 kcal per day typically supports 0.5 kg weekly loss. Always consult your GP before starting any weight loss programme.
Who is eligible for prescription weight loss medication in the UK?
Adults with a BMI of 30 or above, or 27 or above with weight-related health conditions (such as type 2 diabetes, high blood pressure, or sleep apnoea), may be eligible. Eligibility is assessed individually by a healthcare professional. Speak to your GP or a licensed prescriber to find out if you qualify.
What's the difference between Mounjaro and Wegovy?
Mounjaro (tirzepatide) is a dual GIP and GLP-1 receptor agonist that may produce slightly higher average weight loss. Wegovy (semaglutide) is a GLP-1 agonist only. Both are once-weekly injections. Clinical trial data shows Mounjaro averages ~15–clinically studied weight loss, Wegovy ~15%. Individual results vary; your prescriber will advise which suits you.
Can I access weight loss medication through the NHS?
Yes. NICE has approved tirzepatide (Mounjaro) and semaglutide (Wegovy) for NHS use. Access is through specialist tier 3 weight management services — usually by GP referral. NHS availability varies by region and waiting lists can be lengthy. Private prescribing through GPhC-registered pharmacies is also available without NHS referral.
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.