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
Dinner Ideas For Weight Loss in the UK
Eating a healthy dinner is one of the most important parts of any weight management uk plan. What you eat in the evening affects your metabolism, sleep quality, and how you feel the next day. This guide covers practical dinner ideas, portion sizes, and how prescription weight loss medication available through the NHS and private clinics can support your progress alongside dietary changes.
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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.
Prescription Weight Loss Options in the UK
If you're struggling to lose weight through diet and exercise alone, prescription weight loss medication is now available in the UK for eligible adults. Three main options are licensed:
- Mounjaro (tirzepatide) — a once-weekly injection that works by reducing appetite and helping you feel fuller after meals
- Wegovy (semaglutide) — a once-weekly GLP-1 injection approved for weight management
- Saxenda (liraglutide) — a daily injection also licensed for weight loss
These medications are designed to work alongside healthy eating and exercise, not replace them. Clinical trials show that glp-1 weight loss medications help people lose an average of 15–20% of their body weight, though individual results vary significantly. All three are prescription-only and require a clinical assessment before being prescribed.
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, weight loss medication nhs access is available through specialist tier 3 weight management services, but waiting lists vary considerably by region. Many NHS areas have waiting times of several months to over a year. Alternatively, private online prescribing services offer faster access following a remote clinical assessment — typically within days.
To find out if you're eligible, check your BMI using our free BMI calculator on this page. Adults with a BMI of 30 or above, or 27 or above with weight-related conditions like type 2 diabetes, high blood pressure, or sleep apnoea, may be eligible. Your GP can discuss NHS options, or you can pursue a private assessment if you prefer faster access.
- 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.
What should a healthy weight loss dinner contain?
A healthy weight loss dinner should include protein (lean meat, fish, eggs, legumes), plenty of non-starchy vegetables (broccoli, peppers, leafy greens), and healthy fats (olive oil, avocado) in moderate amounts. Aim for about 400–500 calories per meal. Avoid high-calorie sauces, fried foods, and refined carbohydrates. Portion control is key — use a smaller plate to help with portion awareness.
How does prescription weight loss medication work with diet changes?
Prescription weight loss injections like Mounjaro and Wegovy reduce your appetite and help you feel fuller after eating smaller portions. This makes it easier to stick to a healthy diet naturally, rather than fighting constant hunger. They're designed to support — not replace — healthy eating and exercise. Most people find it easier to make better dinner choices when appetite is better controlled.
Can I get weight loss medication through the NHS in the UK?
Yes, prescription weight loss uk medication is available through NHS specialist weight management services if you meet the eligibility criteria. However, access varies significantly by region and waiting lists can be long. Your GP can refer you to your local tier 3 service. Alternatively, private online clinics offer faster access following a clinical assessment, typically within days.
How quickly will I lose weight with dinner changes alone?
Safe, sustainable weight loss is typically 0.5–1 kg per week through diet and exercise changes. This requires a calorie deficit of around 500 kcal daily. Results depend on your current weight, metabolism, and how consistently you stick to changes. If you're not seeing progress after 8–12 weeks, your GP can discuss whether prescription medication might help.
What's the difference between Mounjaro and Wegovy for weight loss?
Both are once-weekly injections licensed for weight management in the UK. Mounjaro (tirzepatide) works on two hormone pathways and shows slightly higher average weight loss (15–21%) in trials. Wegovy (semaglutide) works on one pathway with average weight loss around 15%. Individual results vary, and a prescriber will advise which is more suitable for you based on your health and circumstances.
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.