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
Eggs for Weight Loss — What You Need to Know
Eggs are often recommended in weight loss diets because they're high in protein, low in calories, and help you feel fuller for longer. A medium egg contains about 6–7g of protein and only 70–80 calories, making them a practical food choice for weight management. However, food alone rarely achieves significant weight loss. If you're struggling with your weight, prescription weight management options are available in the UK for eligible adults alongside dietary changes like including eggs in your meals.
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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 Loss Options
If you have a BMI of 30 or above, or 27 or above with weight-related health conditions, you may be eligible for prescription weight loss medication in the UK. Three medications are currently licensed for weight management:
- Mounjaro (tirzepatide) — a dual GIP and GLP-1 receptor agonist injected once weekly, approved by the MHRA for weight management
- Wegovy (semaglutide) — a GLP-1 receptor agonist injected once weekly, with clinical trial data showing average weight loss of around 15% body weight
- Saxenda (liraglutide) — a GLP-1 injection administered daily
These medications work alongside dietary changes and increased physical activity — not instead of them. Our GLP-1 weight loss calculator can help you estimate potential outcomes at different doses. Combining prescription weight loss medication with a balanced diet including protein-rich foods like eggs may improve results.
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.
How to Access Weight Loss Treatment in the UK
Prescription weight loss medication is available through two routes: the NHS or privately. On the NHS, you'll need referral from your GP to a tier 3 specialist weight management service — availability and waiting times vary significantly by region. Privately, you can access these medications through a GPhC-registered online pharmacy following an online consultation with a UK-licensed prescriber, typically within days rather than months.
Your GP can assess your eligibility and discuss which option suits you best. Use our free BMI calculator to check your starting point, then speak to your GP about whether prescription weight loss treatment is appropriate for your circumstances.
- 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.
Why are eggs good for weight loss?
Eggs are high in protein (6–7g per medium egg), which increases satiety and helps you feel fuller longer. They're also low in calories (70–80 per egg), making them a nutrient-dense choice for a reduced-calorie diet. Protein also has a higher thermic effect than carbohydrates, meaning your body uses more energy to digest it.
What's the difference between Mounjaro and Wegovy for weight loss?
Both are GLP-1-based medications, but Mounjaro (tirzepatide) activates two hormone pathways (GIP and GLP-1), while Wegovy (semaglutide) activates GLP-1 only. Clinical trials showed Mounjaro may produce slightly higher average weight loss (15–21% body weight) compared to Wegovy (around 15%), though individual results vary significantly.
Do I need to diet if I take prescription weight loss medication?
Yes. Prescription weight loss medications like Mounjaro and Wegovy work best alongside a reduced-calorie diet and increased physical activity. Medication supports your efforts but doesn't replace lifestyle changes. Foods like eggs provide protein that helps preserve muscle mass during weight loss.
Can I access weight loss injections on the NHS?
Yes, if eligible. You'll need referral from your GP to a specialist tier 3 weight management service. NHS eligibility typically requires BMI of 30 or above, or 27 or above with weight-related health conditions. However, NHS waiting lists are often lengthy, and regional availability varies significantly.
How long does it take to see results with weight loss medication?
Most people begin noticing changes within 2–4 weeks of starting prescription medication. Maximum benefit usually appears around 16–20 weeks. Weight loss continues over months as doses are increased. Individual timelines vary — track your progress using our free progress tracker and discuss results with your prescriber regularly.
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.