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
Yoga for Weight Loss — How It Fits Into UK Weight Management
Yoga can be a valuable part of a weight management plan, supporting flexibility, strength, and mindfulness. However, weight loss is primarily driven by calorie deficit and lifestyle changes. If you're looking to lose weight in the UK, yoga works best alongside dietary changes and, for eligible adults, prescription weight loss medication may also be available. This guide explains how yoga contributes to weight management and what other options you can explore with your GP.
10,000+ calculations today · NHS-aligned thresholds · 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/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.
Prescription Weight Loss Options Available in the UK
For adults seeking additional support beyond lifestyle changes, the UK has three prescription-only weight loss medications available. These are licensed for weight management and work differently from exercise-based approaches.
- Mounjaro (tirzepatide) — a once-weekly injection that works as a dual GIP and GLP-1 receptor agonist. Clinical trials showed participants lost an average of 15–21% of their body weight over 72 weeks, though individual results vary.
- Wegovy (semaglutide) — a once-weekly GLP-1 injection. STEP trial data showed average weight loss of approximately 15% body weight at 68 weeks, alongside diet and exercise.
- Saxenda (liraglutide) — a daily injection option, also a GLP-1 receptor agonist.
All three are prescribed only after a clinical assessment. Eligibility includes adults with a BMI of 30 or above, or 27–29.9 with weight-related health conditions such as type 2 diabetes, high blood pressure, or sleep apnoea. You can calculate your personal BMI using our free BMI calculator to check if you might be within the eligible range.
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.
NHS vs Private Access — How to Find Out If You're Eligible
In the UK, prescription weight loss treatment is available through two routes. NHS access is through specialist tier 3 weight management services — your GP can refer you, though waiting lists vary by region and can be lengthy. Private access is available through online consultations with UK-licensed prescribers, without needing an NHS referral.
Before pursuing either route, understand your weight management context. Use our free weight converter to know your weight in both kg and stone, and calculate your BMI with our free tool above. Then speak to your GP about whether prescription medication alongside lifestyle changes — including yoga, diet, and physical activity — is right for you. Your GP can assess your individual health needs and discuss all available options.
- 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 yoga alone lead to significant weight loss?
Yoga supports weight loss through calorie burn, improved body awareness, and stress reduction, but weight loss primarily comes from a calorie deficit. Yoga is most effective as part of a comprehensive approach including dietary changes and, for eligible adults, prescription weight loss medication may provide additional support.
What prescription weight loss medications are available on the NHS in the UK?
Mounjaro, Wegovy, and Saxenda are all available on the NHS through specialist weight management services. Access requires referral from your GP and depends on regional availability. Private options are also available through UK-licensed prescribers without NHS referral.
Who is eligible for prescription weight loss medication in the UK?
Adults with a BMI of 30 or above, or 27–29.9 with weight-related health conditions like type 2 diabetes or high blood pressure, may be eligible. A prescriber or GP will assess your individual circumstances. Use our free BMI calculator to check your BMI and discuss eligibility with your GP.
How much weight can you expect to lose with prescription medication like Mounjaro or Wegovy?
Clinical trials showed average weight loss of 15–21% body weight with Mounjaro and approximately 15% with Wegovy over several months, but individual results vary significantly. These medications work best alongside reduced-calorie diet and increased physical activity — not as a substitute for lifestyle changes.
Should I choose yoga or prescription medication for weight loss?
Yoga and prescription medication serve different purposes. Yoga supports overall fitness, flexibility, and mental health. Prescription weight loss medication may help suppress appetite and support weight loss for eligible adults. The best approach combines lifestyle changes — including yoga, balanced diet, and activity — with medical support if appropriate for your circumstances. Discuss options with your GP.
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.