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
What You Should Know About Weight Management in the UK
If you've heard the term "mouranjo" and aren't sure what it means, you're not alone โ there's often confusion around weight management terminology in the UK. This guide provides clear, evidence-based UK health information to help you understand your options. Whether you're exploring weight loss approaches or seeking NHS guidance on healthy weight management, our aim is to give you practical information aligned with NHS recommendations. We've included our free BMI calculator and weight converter to help you assess your current health status using UK measurements (stone, kilograms, and pounds). Remember, any significant health decisions should involve a conversation with your GP.
10,000+ calculations today ยท NHS-aligned thresholds ยท 100% free
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/mยฒ).
While BMI isn't a perfect measure โ it doesn't account for muscle mass, bone density, or fat distribution โ 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 โ 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 Management Options Available in the UK
The NHS recognises several evidence-based approaches to healthy weight management. These range from lifestyle changes to prescription medications, depending on your individual circumstances and health needs.
- Lifestyle modifications: Reduced-calorie diet and increased physical activity remain the foundation of sustainable weight management. The NHS recommends aiming for a loss of 0.5โ1 kg per week.
- Structured support: Your GP can refer you to tier 1 or tier 2 weight management services in your area, which offer digital tools, behaviour change programmes, and community support.
- Specialist services: For those with a BMI of 30 or above (or 27+ with weight-related health conditions), NHS specialist tier 3 services may offer prescription medications alongside lifestyle support.
- Private options: Some individuals access prescription weight management medications through private prescribing services following clinical assessment.
Clinically BackedWeight Loss
No appointments. No waiting rooms. Just care โ 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 โ 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 โ completely free.
Taking the First Step Towards Healthy Weight
Your GP is the best starting point for personalised UK health advice about weight management. They can assess your individual circumstances, discuss your health goals, and recommend the most appropriate approach โ whether that's lifestyle support, NHS weight management services, or further specialist assessment.
Our free tools โ including our BMI calculator, weight converter, and weight loss calculator โ can help you track your progress and understand your current health metrics using NHS-aligned guidance. Remember that healthy weight is individual; what matters most is how you feel, your energy levels, and reducing health risks associated with excess weight.
- 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 โ 5mg โ 7.5mg โ 10mg โ 12.5mg โ 15mg
- GLP-1 receptor agonist
- Up to 15โ17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg โ 0.5mg โ 1mg โ 1.7mg โ 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 | 15โ22.5% | 12โ17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20โ32 weeks | 16โ20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | ยฃ150โยฃ250/month | ยฃ150โยฃ300/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 โ 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.
What does "mouranjo" mean in UK health context?
"Mouranjo" doesn't appear in standard NHS health terminology. You may have encountered a brand name, spelling variation, or colloquial term. If you're researching weight management options, speak with your GP for clarity on specific treatments or programmes. Our weight management guide explains all licensed prescription options available in the UK.
How do I access weight management support on the NHS?
Start with your GP, who can assess your needs and refer you to appropriate NHS services. Tier 1 offers self-help and digital tools; tier 2 provides structured programmes; tier 3 offers specialist multidisciplinary services (including medications for those who qualify). Waiting times vary by region.
What's the difference between BMI and healthy weight?
BMI is a screening tool using height and weight; a healthy BMI is 18.5โ24.9 for most adults (lower for South Asian and other groups per NHS guidance). However, BMI doesn't account for muscle mass or fat distribution. Your GP can provide personalised guidance on what healthy weight means for you.
Are prescription weight management medications available through the NHS?
Yes โ medications like tirzepatide and semaglutide are available through NHS tier 3 specialist weight management services for eligible adults (typically BMI 30+, or 27+ with health conditions). Access and waiting times vary significantly by region. Private prescribing is also available following clinical assessment.
How accurate is the BMI calculator for assessing my health?
BMI is a useful screening tool but has limitations โ it doesn't distinguish between muscle and fat, or account for fat distribution. Our free BMI calculator aligned with NHS guidelines provides context, but your GP can give comprehensive assessment of your individual health and weight goals.
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.