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
Does Self Hypnosis Help With Weight Loss?
Self hypnosis for weight loss is a complementary approach some people explore, but evidence for its effectiveness remains limited. Weight loss requires a combination of factors: calorie deficit, dietary changes, physical activity, and sometimes medical support. If you're looking for sustainable weight management in the UK, there are evidence-based options available, from NHS programmes to prescription medication. Understanding what actually works — based on clinical evidence — can help you make an informed choice about your approach.
10,000+ calculations today · NHS-aligned thresholds · 100% free
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.
What Does Research Show About Hypnosis and Weight Loss?
Clinical research on hypnotherapy for weight loss shows modest results at best. A 2020 review of hypnosis studies found that hypnotherapy may produce small weight losses, typically around 0.5 to 1 kg more than placebo or no treatment — but these differences are often not clinically significant. Individual studies are small, methodologically weak, and hypnosis is rarely tested against established interventions like structured diet programmes or cognitive-behavioural therapy (CBT).
The NHS does not routinely recommend hypnosis as a primary weight loss treatment. Instead, the NHS weight management pathway focuses on evidence-backed approaches: calorie-controlled eating, increased physical activity, and specialist support through tier 3 weight management services. If you have a BMI over 30, or 25 with weight-related health conditions, your GP can refer you to these services. For those with a BMI indicating overweight or obesity, our free BMI calculator can help you understand your current health classification and whether specialist support may be relevant.
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.
Evidence-Based Alternatives for Weight Management UK
If you're serious about sustainable weight loss, evidence-based approaches are more reliable. The NHS promotes a three-tier model: self-help and digital tools (tier 1), primary care programmes like the NHS Weight Loss Plan (tier 2), and specialist multidisciplinary services (tier 3). For eligible adults, prescription weight loss medication — such as GLP-1 injections — are now available through NHS specialist weight management services or private prescription. These have clinical trial evidence showing 15–21% average body weight loss when combined with lifestyle changes. Our GLP-1 weight loss calculator can estimate potential results at different doses if you're exploring medication options. Consulting your GP is the first step to understanding which approach suits your health profile and 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.
Can hypnosis actually help you lose weight?
Hypnosis may help some people by addressing emotional eating or motivation, but clinical evidence for significant weight loss is weak. Any weight loss achieved is typically small and similar to placebo. The NHS does not recommend hypnotherapy as a primary weight loss treatment. Evidence-based approaches like structured diet, physical activity, and medical support (where appropriate) are more reliable.
How much weight can you lose with self hypnosis?
Studies suggest hypnosis produces minimal additional weight loss beyond placebo — often less than 1 kg. For comparison, clinical trials of prescription weight loss medication (GLP-1 injections) show 15–21% average body weight loss. If you're seeking substantial, sustainable weight loss, evidence-based methods supported by your GP are more likely to be effective.
What's the best evidence-based approach to weight loss in the UK?
The NHS recommends a combination of reduced-calorie eating, increased physical activity, and behavioural support. For adults with BMI 30 or above (or 25+ with weight-related conditions), referral to specialist tier 3 services is available. Your GP can assess your needs. Some people benefit from prescription weight loss medication — discuss this with your healthcare team.
Is prescription weight loss medication available on the NHS?
Yes, GLP-1 weight loss medications like Mounjaro and Wegovy are now available through NHS specialist weight management services for eligible adults. Access varies by region and depends on BMI and health factors. Your GP can refer you to a specialist tier 3 service. Private prescription is also available through licensed online prescribers following clinical assessment.
How do I check if I'm overweight and what support is available?
Calculate your BMI using our free BMI calculator on this page — enter your weight in stone/kg and height. A BMI of 25–29.9 is overweight; 30+ is obese. The NHS recommends losing 0.5–1 kg per week. If your BMI indicates you could benefit from support, speak to your GP about weight management programmes, lifestyle intervention, or specialist services in your area.
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.