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
How to Find a Nutritionist Near You for Weight Loss
Finding a qualified nutritionist to support your weight loss journey is an important step towards sustainable, healthy weight management in the UK. Nutritionists can provide personalised dietary advice, help you understand nutrition science, and create meal plans tailored to your needs and health conditions. Whether you're looking for NHS support or private guidance, understanding your options will help you find the right professional for your weight management goals.
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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.
NHS Nutritionist Support and Weight Management Services
In the UK, registered dietitians (RD) are the gold standard for clinical nutrition support and are available through the NHS. Dietitians are regulated by the Health and Care Professions Council (HCPC) and hold recognised qualifications. Ask your GP to refer you to an NHS dietitian, particularly if you have weight-related health conditions such as type 2 diabetes, high blood pressure, or elevated cholesterol.
The NHS also offers weight management programmes through tier 1 and tier 2 services, which include group-based behaviour change support, digital tools, and structured lifestyle interventions. These are often delivered by weight management specialists and may include nutritional guidance. Access varies by region and waiting times can be significant, but these services are free at the point of use.
For more complex cases or severe obesity with comorbidities, you may be referred to tier 3 specialist weight management services, which include multidisciplinary teams with registered dietitians, psychologists, and physicians. These services may also prescribe clinical weight management support tools including prescription weight loss medication if appropriate following assessment.
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.
Private Nutritionists and Finding One Near You
Private nutritionists and registered dietitian nutritionists are available across the UK through independent practices, private health clinics, and online consultations. Look for practitioners registered with professional bodies such as the British Dietetic Association (BDA), the Nutrition Society, or the Freelance Dietitians UK group — these organisations require evidence of appropriate qualifications and continuing professional development.
To find a nutritionist near you, search online directories, ask for recommendations from your GP, or check professional association websites. Private consultations typically cost £50–£150+ per session and are not covered by the NHS, though some private health insurance plans may include nutritional support. Many private nutritionists now offer online consultations, expanding access beyond your local area. When choosing a nutritionist, verify their qualifications, ask about their experience with your specific health goals, and confirm they follow evidence-based practice.
- 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 difference between a nutritionist and a dietitian in the UK?
In the UK, "dietitian" is a legally protected title — registered dietitians (RD) hold HCPC registration and university-level qualifications. "Nutritionist" is not legally protected, so qualifications vary. Look for RD or membership in professional bodies like the BDA. Registered practitioners follow evidence-based practice and are appropriate for clinical nutrition support and weight management.
Can I get a nutritionist through the NHS for weight loss?
Yes. Ask your GP to refer you to an NHS dietitian or weight management programme. Tier 1 and tier 2 services offer free weight management support including dietary guidance. Tier 3 specialist services (available through referral for more complex cases) include registered dietitians and may also assess you for prescription weight loss support if clinically appropriate. Waiting times vary by region.
Should I see a nutritionist before trying weight loss medication?
Dietary support and lifestyle changes are the foundation of weight management. A nutritionist can help you understand nutrition, build healthy eating habits, and set realistic goals. If you're considering prescription weight management medication like Mounjaro or Wegovy, these work alongside — not instead of — dietary and lifestyle changes. A healthcare professional will assess whether medication is appropriate for you following clinical assessment.
How can I find a reputable private nutritionist near me?
Search for practitioners registered with the British Dietetic Association, Nutrition Society, or Freelance Dietitians UK. Check their qualifications (look for RD or recognised qualifications), read reviews, and ask about their experience with weight loss and your specific health needs. Many offer online consultations if local options are limited. Verify credentials before booking and expect to pay £50–£150+ per session privately.
What should I expect from a nutritionist appointment for weight loss?
A good nutritionist will assess your current diet, health history, lifestyle, and goals; discuss any weight-related health conditions; review your eating patterns and habits; and create a personalised nutrition plan. They'll provide practical guidance on balanced eating, portion control, and sustainable dietary changes. Follow-up appointments allow progress review and plan adjustment. Use our free BMI calculator and progress tracker to monitor your health metrics alongside professional support.
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.