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
Weight Loss Breakfasts: Smart Eating to Start Your Day
Breakfast plays a crucial role in weight management and your daily energy levels. Choosing a high-protein, fibre-rich breakfast can help you feel fuller for longer, reduce mid-morning cravings, and support sustainable weight loss. Whether you're managing your weight through lifestyle changes alone or alongside prescription weight loss medication, starting your day with the right breakfast sets a positive tone for better food choices throughout the day. This guide shares evidence-based breakfast ideas aligned with NHS weight management principles.
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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.
Best Breakfast Foods for Weight Loss
Protein-rich breakfasts are key to sustained weight loss. Aim for 20–30g of protein at breakfast to promote satiety and stabilise blood sugar levels. Good options include eggs (boiled, scrambled, or poached), Greek yoghurt (0% fat), cottage cheese, and lean meat like turkey bacon.
- Eggs: 6g protein per egg, versatile, affordable, and filling
- Greek yoghurt: 10g protein per 100g, add berries for fibre
- Porridge with protein powder: oats provide sustained energy
- Smoked salmon with wholemeal toast: omega-3s support heart health
- Beans on toast: fibre and plant-based protein combined
These choices align with NHS weight management principles, which recommend protein-rich foods as part of a balanced reduced-calorie diet. Avoid sugary cereals and pastries — they trigger energy crashes and increased hunger within 2–3 hours.
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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.
Practical Breakfast Ideas for Everyday Weight Loss
Simple, repeatable breakfast ideas work best for long-term weight loss. Try a two-egg omelette with spinach and mushrooms (around 200 kcal), plain Greek yoghurt with a small handful of berries and almonds (approximately 180 kcal), or wholemeal toast with mashed avocado and a poached egg (roughly 250 kcal). These meals combine protein, healthy fats, and fibre to keep you satisfied until lunch.
If you're following a weight loss programme in the UK — whether through NHS services, prescription weight loss medication, or lifestyle changes — timing breakfast within 1–2 hours of waking helps regulate hunger hormones and supports better appetite control throughout the day. Track your breakfast with our free progress tracker to identify which breakfasts work best for your sustained weight loss.
- 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's the best breakfast if I'm taking weight loss medication like GLP-1 injections?
If you're using prescription weight loss medication such as Mounjaro or Wegovy, smaller portions are often preferred due to reduced appetite. Focus on nutrient-dense, protein-rich foods: scrambled eggs, Greek yoghurt, or smoked salmon on wholemeal toast. Many people find they eat less at breakfast naturally. Our GLP-1 weight loss calculator can help estimate your dietary needs at different medication doses.
How many calories should a weight loss breakfast be?
For sustainable weight loss, a breakfast of 300–400 kcal is typical as part of a reduced-calorie diet. This depends on your total daily calorie goal, usually around 500 kcal below your maintenance level for gradual loss of 0.5–1 kg per week (NHS guidance). Your GP or a weight management professional can advise your specific target.
Should I eat breakfast if I'm not hungry?
Not necessarily. If you genuinely lack hunger — especially if taking GLP-1 weight loss medication — don't force food. However, ensure you eat balanced meals later to meet nutritional needs. Skipping breakfast entirely can lead to overeating at lunch or dinner. Listen to your body's signals.
Can breakfast affect my BMI?
Yes. A balanced, protein-rich breakfast supports appetite control and reduced overall calorie intake, which lowers BMI over time. Poor breakfast choices (sugary cereals, pastries) lead to energy crashes, increased hunger, and higher daily calorie consumption, making weight loss harder. Use our BMI calculator to track your progress.
Is breakfast timing important for weight loss?
Eating breakfast within 1–2 hours of waking helps regulate hunger hormones (ghrelin and leptin), supporting appetite control throughout the day. Skipping breakfast or eating very late can disrupt circadian feeding patterns and increase hunger later. Consistency matters more than exact timing — choose what works for your routine.
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.