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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Easy Weight Loss Meals & Recipes for UK Adults
Preparing simple, balanced meals is one of the most effective ways to support weight loss. In the UK, easy weight loss meals typically focus on whole foods, controlled portions, and sustainable cooking habits rather than restrictive dieting. Many people combine dietary changes with other approaches to weight management—including prescription medications now available through the NHS and private prescribing. This guide covers practical meal ideas and explores UK-licensed options that may support your weight management journey.
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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.
UK Prescription Weight Management Options
For eligible UK adults, prescription weight loss medications can support weight management alongside dietary improvements. Three main options are licensed in the UK:
- Mounjaro (tirzepatide)—a once-weekly injection that works by activating two natural hormone pathways, helping to regulate appetite and support feeling fuller after meals. Clinical trials showed average weight loss of 15–21% of body weight over 72 weeks.
- Wegovy (semaglutide)—a once-weekly GLP-1 injection that may reduce appetite and food cravings. Clinical evidence suggests average weight loss of approximately 15% body weight.
- Saxenda (liraglutide)—a daily injection option also approved for weight management in the UK.
All three are prescription-only medicines requiring a clinical assessment before prescribing. Eligibility typically includes adults with a BMI of 30 or above, or 27 or above with weight-related health conditions such as type 2 diabetes or high blood pressure. Individual results vary significantly, and medication works best when combined with balanced meals and increased physical activity.
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.
Accessing Weight Loss Support on the NHS and Privately
In the UK, prescription weight loss medication is available through two main routes. The NHS pathway involves referral to a specialist tier 3 or tier 4 weight management service via your GP—though regional availability and waiting times vary considerably across different areas. The private prescribing route offers faster access through GPhC-registered online pharmacies following a clinical consultation with a UK-licensed prescriber.
Regardless of route, a prescriber will assess whether medication is suitable for you based on your individual health profile, other medications you take, and weight management goals. Use our free BMI calculator above to understand your current BMI category, and discuss your options with your GP—they can advise on NHS eligibility and local services. Our GLP-1 weight loss calculator can help estimate potential weight loss projections at different medication doses.
- 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 I use easy meal recipes alone to lose weight, or do I need medication?
Easy, balanced meals form the foundation of sustainable weight loss—most people can achieve healthy weight loss through dietary changes and increased activity alone. However, if you have a BMI of 30 or above or have weight-related health conditions, prescription medication may be an option worth discussing with your GP. Medication works best alongside healthy eating, not instead of it.
What makes a meal "easy" for weight loss?
Easy weight loss meals focus on whole foods (lean protein, vegetables, whole grains), reasonable portions, and simple preparation. Aim for roughly half your plate as vegetables, a quarter as lean protein, and a quarter as whole grains or starchy vegetables. Pre-planning and batch cooking can make it easier to stick to healthy choices throughout the week.
How quickly will I lose weight with meal changes alone?
The NHS recommends aiming for weight loss of 0.5 to 1 kg per week through diet and exercise—this rate is considered sustainable and safe for most adults. Losing 5–10% of body weight can already bring meaningful health benefits like improved blood pressure and blood sugar control.
Am I eligible for prescription weight loss medication on the NHS?
NHS prescription weight loss medication is typically available for 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). Eligibility varies by region. Ask your GP for a referral to your local specialist weight management service to find out if you qualify.
What's the difference between Mounjaro and Wegovy for weight loss?
Both are once-weekly injections approved for weight management in the UK. Mounjaro (tirzepatide) activates two hormone pathways and showed average weight loss of 15–21% in clinical trials. Wegovy (semaglutide) activates one pathway with average weight loss around 15%. Individual results vary—your prescriber will help determine which is most suitable for you.
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.