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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Sleep Hypnosis for Weight Loss — What the Evidence Shows
Sleep hypnosis is sometimes promoted as a weight loss tool, but the scientific evidence for it as a standalone weight management approach is limited. While relaxation and better sleep can support overall health, there's no strong clinical evidence that hypnosis alone leads to significant weight loss. Effective weight management in the UK typically combines dietary changes, physical activity, and sometimes prescription weight loss medication for those who qualify. This guide explains what research shows about sleep hypnosis, what actually works for weight loss, and the evidence-based options available to you.
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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.
What Does Research Show About Sleep Hypnosis and Weight Loss?
Clinical trials examining hypnosis for weight loss have produced mixed and generally modest results. While some studies suggest hypnosis may help slightly with appetite control or food choices when combined with dietary advice, the effect is typically small and not significantly better than standard weight loss counselling alone.
- Limited standalone evidence: Hypnosis alone, including sleep-based hypnosis, has not been shown to produce meaningful weight loss without accompanying lifestyle changes
- Modest support for combined approaches: When hypnosis is paired with diet and exercise guidance, some participants report minor improvements, but results are inconsistent
- Sleep quality matters: Better sleep does support general health and may indirectly help with weight management, but this benefit comes from improved sleep itself — not from hypnotic suggestion
- Individual variation: People respond differently to hypnosis; some find relaxation techniques helpful for stress management, which may reduce stress-related eating for certain individuals
The NHS does not recommend hypnosis as a primary weight management treatment. For evidence-based approaches, the NHS suggests starting with lifestyle changes, and for those with a BMI of 30 or above (or 27 or above with weight-related health conditions), prescription weight loss medication may be considered following clinical assessment.
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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.
What Actually Works for Weight Loss in the UK?
Evidence-based weight management combines three key elements: reduced-calorie diet (creating a deficit of around 500 kcal daily for ~0.5 kg weekly loss), increased physical activity (150 minutes of moderate activity per week is recommended), and behaviour change support (through your GP, NHS services, or structured programmes).
For eligible adults, prescription weight loss medications such as GLP-1 injections may significantly support weight management. Clinical trials show these can help achieve 15–clinically studied weight loss when combined with diet and exercise. Try our free GLP-1 weight loss calculator to explore potential outcomes at different doses. Calculate your BMI using our free BMI calculator to check your eligibility, and use our progress tracker to monitor your journey over time.
- 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.
Is sleep hypnosis safe for weight loss?
Sleep hypnosis is generally safe if conducted by a qualified practitioner, but safety isn't the concern — effectiveness is. There's no strong evidence it produces significant weight loss. If you're considering it, ensure the practitioner is properly trained. For evidence-based weight management, consult your GP.
Can hypnosis help with stress eating?
Hypnosis may help some people relax and manage stress, which could indirectly reduce stress-related eating in certain cases. However, cognitive behavioural therapy (CBT) has stronger evidence for addressing emotional eating patterns. Your GP can refer you to NHS support services.
How much weight can you lose with sleep hypnosis?
Research shows sleep hypnosis alone typically produces little to no significant weight loss. Any modest results usually occur when combined with diet and exercise changes. For reliable outcomes, evidence-based approaches like prescription weight loss medication (for eligible adults) alongside lifestyle changes work better.
Is sleep hypnosis better than GLP-1 weight loss injections?
No. Clinical trials demonstrate GLP-1 medications like Wegovy support approximately clinically studied weight loss on average, whereas sleep hypnosis alone shows minimal evidence. However, both require a prescription from a healthcare professional and work best alongside diet and exercise changes.
What's the NHS recommendation for weight loss?
The NHS recommends starting with a reduced-calorie diet, physical activity (150 mins weekly), and behaviour change support. For BMI 30 or above (or 27+ with health conditions), speak to your GP about referral to specialist weight management services where prescription medications may be considered.
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.