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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Vegan Diet Meal Plans For Sustainable Weight Loss
A well-planned vegan diet can support effective weight loss when combined with a calorie deficit and regular physical activity. Plant-based eating offers benefits including high fibre content, lower saturated fat, and nutrient-dense whole foods. Whether you're exploring dietary changes alone or considering weight management options like GLP-1 weight loss medication, understanding how to structure balanced vegan meals is essential for long-term success. This guide covers practical meal planning strategies aligned with NHS weight loss recommendations and offers insight into combining nutrition with your overall weight management journey.
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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.
Building A Balanced Vegan Meal Plan
A sustainable vegan meal plan for weight loss requires careful attention to protein, healthy fats, and carbohydrates. Here's how to structure balanced meals:
- Protein sources: Lentils, chickpeas, beans, tofu, tempeh, nuts, seeds, and plant-based protein powder provide essential amino acids and support muscle maintenance during weight loss
- Whole grains: Brown rice, quinoa, oats, and wholemeal bread provide sustained energy and fibre, helping you feel fuller for longer
- Vegetables: Fill half your plate with vegetables — they're nutrient-dense and naturally lower in calories
- Healthy fats: Avocados, olive oil, nuts, and seeds contain essential fatty acids and support satiety
A typical daily calorie deficit of around 500 kcal supports gradual weight loss of approximately 0.5 kg per week — aligned with NHS weight loss guidance. Use our free BMI calculator to establish your baseline, then our GLP-1 weight loss calculator to explore how dietary changes or prescription options might support your goals.
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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.
Sample Vegan Meal Plan Structure
Breakfast: Oatmeal with berries, ground flaxseed, and plant-based milk (approximately 300 kcal). Lunch: Chickpea salad with quinoa, mixed vegetables, and tahini dressing (approximately 400 kcal). Dinner: Lentil and vegetable stir-fry with brown rice (approximately 450 kcal). Snacks: Hummus with carrot sticks, handful of almonds, or a banana (approximately 150 kcal total).
This structure totals roughly 1,300 kcal daily, though individual needs vary based on age, activity level, and current weight. For prescription weight loss medication support in the UK, vegan meal planning works well alongside GLP-1 medications like Mounjaro or Wegovy — both are prescription-only and require clinical assessment. Combine dietary changes with increased physical activity and track your progress using our free progress tracker to stay motivated.
- 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 a vegan diet help with weight loss?
Yes. Plant-based diets are often naturally lower in calories and higher in fibre, which promotes satiety. Weight loss occurs when you maintain a calorie deficit — typically 500 kcal per day for approximately 0.5 kg weekly loss, aligned with NHS guidance. Success depends on choosing whole foods and managing portion sizes rather than vegan status alone.
What protein sources work best in a vegan weight loss plan?
Lentils, chickpeas, beans, tofu, tempeh, nuts, and seeds are excellent vegan proteins. They provide essential amino acids, support muscle maintenance during weight loss, and offer high fibre content that helps you feel fuller. Include a protein source at each meal for optimal satiety and metabolic support.
How does a vegan diet work with prescription weight loss medication?
Plant-based eating complements prescription weight loss medications like Mounjaro and Wegovy effectively. These GLP-1 medications reduce appetite, making a structured vegan meal plan easier to follow. However, they are prescription-only and require clinical assessment. Your prescriber will advise whether medication is appropriate alongside your dietary approach.
What's the recommended rate of weight loss with diet alone?
The NHS recommends losing 0.5 to 1 kg per week for sustainable, healthy weight loss. This requires a calorie deficit of approximately 500 kcal daily. Faster loss may increase muscle loss and isn't sustainable long-term. Calculate your personal BMI and weight management goals using our free BMI calculator and weight loss calculator.
Should I combine a vegan diet with exercise?
Yes. Combining dietary changes with regular physical activity produces the best weight loss and health outcomes. Exercise improves cardiovascular health, supports muscle maintenance, and enhances mood and energy. Aim for at least 150 minutes of moderate activity weekly, plus strength training twice weekly, according to NHS activity guidelines.
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.